Customer Testimonials
All the following testimonials are completely independent of Tunit and have been used with the authors' permission. Don’t just take our word for it - see what our customers have to say. Click here if you would like to leave feedback
Jump to your vehicle manufacturer:
Alfa Romeo
Alfa Romeo GT 1.9 JTD
The tunit box is fantastic, there now seems to be loads more power throughout the rev range and the noticeable turbo lag that was there before has all but gone. Also the average fuel consumption has improved by about 3-4 mpg! It's also good how easy the box is to remove if need be, 10 minute job. It really has increased my enjoyment of the car, I really can't fault it, worth every penny.
R. Robson, London
June 2007
Audi
A3 TDI A4 1.9 TDI-PD A4 2.0 TDI A4 2.0 TDI 170bhp A6 1.9 TDI A6 2.0 TDI 140bhp A6 3.0 TDi
Audi A6 3.0 TDi
This is my fourth Audi TDi and my first A6. I opted for the 3.0Tdi Quattro SE Avant as it rides a little higher than the S-Line which helps when towing my caravan. When reading reviews the A6 was criticised for a firm ride so I had the adaptive air suspension fitted and it is superb, in comfort mode it floats along and gives a superb ride, however for a sporty ride just set it to dynamic. This is my first automatic and the tiptronic is a dream to use with apparently seamless shifting, you can over ride it at anytime with the shift paddles giving you total control. I had my 3 previous TDi's superchipped but this time I have gone for the Tunit unit which I had fitted at Tunit Chorley along with a K+N Filter. If you sell the car you can take it off in minutes and Tunit will give you a part ex allowance if it is not compatible with your new car. It now punches out 275 bhp and the power delivery is smooth and instant.
Alan Preston, Bolton
Audi A6 2.0 TDI 140bhp
My car is going like a train!!!!!!!! I think i'm getting about 10 extra mpg,measured on a nice flat straight road.That alone is worth the money. (I'm trying to convince my dad and sister to get one now! Think mum is the main problem here!)
Thanks,
Ronnie Horakova, Aberdeenshire
February 2010
Audi A4 2.0 TDI 170bhp
Needed more mpg and grunt! Ordered tunit, fitted it, smiled!
Roger Binks, St. Albans
October 2008
Audi A4 2.0 TDI
This is my 3rd Tunit and I would not run a tdi without one. The current tunit has improved the torque tremendously making it far easier to drive due to less gear changes. The throttle response is instant without any turbo lag and I would recommend a Tunit to friends and family.
Alan Preston, Bolton
October 2008
Audi A3 TDI
From knowing little about diesel tuning I knew my car was more capable, a friend recommended tunit. One phone call convinced me it is a quality product, I collected my box the same afternoon were I was taken through the product install and even shown were to locate the box on my car. The service was fantastic and even before fitting the tunit box I left with a smile and now an even bigger one with the difference it has made to my car!! thanks
Niel Murphy, Preston
October 2008
Audi A4 2.0 TDI 170bhp
hi mike,just a short note about my tunit ,performance is a lot better now that the car is run in. with economy slightly improved. very impressed with unit many thanks ralph
Ralph Grinter, Pontypridd
October 2008
Audi A6 1.9 TDI
A fantastic product. As a taxi owner it saves me on fuel but also makes the car easier to drive with less gear changing because of the extra torque
Rod Hill, Inverness
October 2008
Audi A4 1.9 TDI-PD
Thanks for all your help on Monday, I didn’t appreciate the difference in my car until yesterday. Getting into it after not driving for 24 hours was a revelation. Cold starting did not produce the usual black smoke, there was no hesitation when moving off form standstill and the throttle response was much quicker with VERY smooth acceleration. So smooth that my wife commented on it. The improvement to torque at low revs means that the car will trickle along in 3rd gear without throttle, even up a slight incline! All in all Tunit is worth every penny.
M. Bland, Newcastle–Upon-Tyne
September 2007
BMW
118d 318D 2.0 320d 320dse touring 330d 335d 530d Alpina D3 X5 3.0d
BMW 318D 2.0
Just had the Tunit V-CR fitted to my 2008 BMW 318 Diesel. Have to say that service and after-care from the company is excellent. Dealer fitted it in 10 mins, took me through de-installation etc and even knocked £20 off the bill. My car is now a 320DSE- torque, economy and smooth engine pull have all improved. Icing on the cake is a 3 year warranty, removability between cars and a PART-EX facility. Superb-buy this product!!!
Steve Milne, County Durham
February 2009
BMW 335d
Hi Dan.
Thank you for the chat on Friday. Transferred the unit to my new 335d. Using setting 6 the effect was immediate and obvious. Previous slight "hesitation" when pulling away now gone completely, car is much more responsive, the auto box seems to use lower revs, car is quieter and smoother, economy improved etc. Quite how the same unit can perform so well on 2 different cars is a mystery to me (though perhaps not to you guys!) but it does and I am again, deeply impressed with the product. A brilliant car just got a whole lot better.
Paul Douglas, Suffolk
February 2009
BMW 320d
The tunit was fitted and we gave it a road test, thank god we got full M Sport suspension, the roll on torque was awesome, acceleration in 3rd and 4th was like being on a bike. This was on the setting it came with, I will up it soon to try it, I guess somewhere around 5bhp a click? Anyway, your little box has to be the best kept secret out there. I'll call when the weather gets better to get it on a laptop.
Adrain Cawsey, Dover
February 2010
BMW 330d
I called in last week and decided to go-ahead with yourselves fitting the unit to my BMW 330D. After a short while (approx 30 mins), my car was fitted with the unit and ready to go. I could not believe the instant response as soon as I accelerated, as, with most diesels, the turbo lag was obvious before fitting of the tunit...to my amazement, this turbo-lag has been completely eliminated, giving my car instant acceleration. This was my main objective with this already powerful car, and after driving back home, I was totally convinced of the improvement both in economy and power. It feels as though I have had a completely new more powerful engine fitted, as the power range through the gearbox (auto) is smoother and about 30-40% quicker!!! To make matters even more immpressive, I have noticed approx. 12 mpg gain. This is a true reading on my on-board-computer, and I have now worked out that it will take me about 6-7 months of driving to "get-my-money-back" on this faultless unit! What more can I say. Absolutely thrilled with the product and I would recommend it to everyone
P Hunt, Southport
June 14th 2004
BMW 530d
Just a quick note to say... Tunit fitted easily & quickly, gives a truly noticeable & impressive performance increase...worth every penny. Your help & advice was also excellent. Many thanks.
Phil Smith, North Yorkshire
June 2007
BMW 118d
Just thought I'd drop you a mail to say how things are going with the car. So far, no problems whatsoever; well, not true actually - if I continue driving it the way I have been, I'll loose my license! Power delivery is very smooth, and it definitely revs longer - in fact, it's much more like a petrol engine at the top end. comparitively, on a twisty road, I think I could keep up with my Boxster S - would be left on the straights, but through the bends... all that torque wins ! And the car is superbly balanced. Fuel consumption has dropped to 42mpg, but I've only been doing short journeys, so can't really comment upon that being the true average. Once again, thanks for your hospitality on my visit to Chorley - it was good to see what really goes on in the tuning world! Look forward to reading Victors article.
David Willis, West Yorkshire
November 2004
BMW 320d
Although the amount that I spend is roughly the same, the amount that I use is less. The ave. fuel consumption has increased by approx 5mpg on average. The engine however is noticeably quieter and more responsive. Personally, I would not consider having a diesel and not fitting a tunit ! Thanks, Willie
William Rowe, Irvine, Ayrshire
October 2008
BMW Alpina D3
After Installation the D3 vastly improved in performance reving like a petrol engine and the extra torque made it pull much harder through the gears.Also it improved the mpg by 4 which is outstanding.Highly reccomended Thanks Dave
Dave Butcher, Waterlooville
October 2008
BMW 320dse touring
Improved economy especially when towing a caravan above 50 mpg have also improved torque.
Howard Bland, Ratby, Leicestershire
October 2008
BMW X5 3.0d
An excellent bit of kit, fit and forget, does what is says on the box!
Julian Bailey-Watts, Chippenham
October 2008
BMW 320D
Excellent customer service with knowledgable staff.
Robert Slowey, Leamlara, County Cork, Ireland
October 2008
BMW X5 3.0d
Great product. Easy to install. Works very well. Frees factory-limited engine.
Sixto Sune, Portugal
October 2008
BMW 320D
Believe it to be excellent product trouble free and easy to fit
Robert Coles, Bridgend
October 2008
Citroën
C4 C5 1.6HDi C5 2.0 HDi Picasso 1.6 HDi
Citroën Picasso 1.6 HDi
Hi Dan,
Seven months down the road and all is good with the Tunit V-CR on my Citroen Xsara Picasso. I have been meaning to email since having it fitted but days have turned into weeks and weeks into months! I wanted to tell you that both Andy and John are a credit to your team. Not only did they fit the Tunit for me (you weren't wrong about the plug not being in the most accessible place!) and optimise the settings, they also give me a cupa and a biscuit :-)
As for the Tunit, if I hadn't seen Andy fit it I would have thought something else had been done to the vehicle! I wasn't really sure what to expect however the difference was immediately noticeable during the test drive and even more so after I started to play a little more. I know the Picasso is only a family vehicle however the Tunit V-CR has made this a great deal more fun to drive :-))
I would also like to report that I have been getting good results with the fuel economy ranging from 2-9mpg more than before fitting it. Obviously this has varied based on the journeys and the setting being used on the Tunit.
Thanks again,
Darren Weatherall, Sheffield
August 2009
Citroën C5 2.0 HDi
Hi Daniel, since the fitment of the Tunit V-CR unit to my new Citroen C5 I have noticed a marked increase in fuel economy, performance and refinement. At a steady motorway cruise the average consumption has improved from 40mpg to in excess of 50mpg. Performance has also increased and the added midrange torque makes overtaking swifter and safer. I am delighted with the result, especially as I fitted the Tunnit to enhance performance rather than economy. The added benefit of being able to transfer the tunit to another vehicle in the future is the icing on the cake.
Lee Henrys, Warrington
June 2008
Citroën C4
Had my tunit fitted same day I bought my new C4 especially noticed the increase in performance. Fuel economy can exceed 60mpg on a long run against mid 40s.
Paul Eslick, Manchester
October 2008
Citroën C5 1.6HDi
Engine runs more smoothly, pulls really well
Finbarr O'Mahony, Douglas, Cork, Ireland
October 2008
Dodge
Dodge Nitro 2.8 CRD
Thanks very much got it fitted easily once you had shown me where to plug it. Just done a short school run and WOW was never going to be a fast car due to its power to weight ratio it was woefully underpowered.. It is a big american lump of iron after all. However have wacked the tunit up to 9 and what a difference, it now drives just so much better, I no longer have to floor the throttle to get a response from the automatic box/engine. It is now truely my dream (family 4x4) car.. It now goes as well as it looks. What a truely amazing piece of kit; every diesel engine should have a Tunit ! Thanks again for the phone calls, emails and humouring me.
Mike Noble, Couty Wicklow
June 2008
Fiat
500 1.3 Ducato 2.8 JTD Punto 1.3 JTD
Fiat 500 1.3
First impressions with the 500 with the Tunit fitted are without doubt quite sensational. The engine is very free revving with a fantastic spread of torque right through to 4000rpm. When driven quickly you fly though the gearbox making the car a whole lot of fun. Its not just the top end of the rev range to benefit either, at 30mph put it in fifth and the 500 purrs along quite happily without any hesitation. Put your foot hard down from this speed and I would have expected an amount of judder and not much engine pick up, but no she pulls away a little slow at first but cleanly never the less. The engine is definitely more smoother and flexible you would definitely question the cars 1.3 litres if you didnt know for something of larger capacity. A little early to comment on fuel consumption yet but first impressions are for an improvement. My wife Lynne comments are that she has been razzing (women talk for driving briskly) with the car being so much more responsive and fun to drive, along with this has stated the on board computer showing an increase of some 2mpg even with the more enthusiastic driving. She has also said it feels a lot smoother. Generally very pleased the tunit it has had a big impact on the little 500. We will let you know a bit more after a bit more running.
Mike Salmon, Warrington
November 2008
Fiat Ducato 2.8 JTD
I use Tunit in my 4.5 tonne Motorhome - It improves overall performance without using more fuel - I am very happy with it
Terry Hector, Axminster
October 2008
Fiat Punto 1.3 JTD
Tunit very good on both cars SRI very good performance. Fiat lot of power for engine size and 64 gallon average over 6K miles
Ian James, Lydbrook
October 2008
Ford
Fiesta 1.4 TDCi Focus 1.8 TDCi Focus TDCi 115 Maverick 2.7 TDI Mondeo 2.0 TDCi Mondeo 2.2 TDCi Mondeo TDCI Mondeo TDCi 130 auto Mondeo TDCI ST Ranger TD Transit
Ford Focus TDCi 115
Ive recently added a tunit V-CR to my Focus TDCI 115 and the results are truly satisfying. With the jumper set to the higest power setting my focus (already well run in) managed 148bhp (121 before) at 3800rpm and 223lb.ft of torque (190 before) at 2200 rpm on a dyno. 0 - 60 has been measured in the dry at 8.3 secs (2 secs quicker than standard) thanks to 7% ish longer gearing courtesy of 17.5" rims, taking 3 gears to do so. Pulls impressively well from 1250 rpm, especially noticable in 4th and 5th gears. Ive backed the jumper off two settings and made do with slightly less power for now and fuel economy really is significantly higher thanks to the substantially stronger high gear pull. I was previously averaging 45mpg over a tank, mostly urban runs of 12 miles or less but including weekly motorway runs of 120 miles. Motorway cruising is easier and smoother (I do not know why) And at 75 mph on good road a truly ridiculous figure of 69.0 mpg showed on my trip computer after 60 miles. A few tanks of fuel later, and without paying too much attention to what my right foot is doing the car easily does 500+ miles on about 48 litres of diesel at about 52 mpg in mixed driving conditions, 7 mpg more than pre-tunit and 2.5 mpg more than ford say the focus on big hoops will do.
Robert Beeton,
11th March 2004
Ford Mondeo TDCi 130 auto
I recently purchased a TUNIT for my Mondeo 130bhp Automatic station wagon. I noticed an improvement in performance, smoothness and fuel consumption immediately after fitting but it was not until I did the round trip to UK last week that I really saw the difference. I drove 3500Km in seven days my average consumption was 6.5l per 100 km, previous trips gave 7.2l per 100 km an improvement of 9.7%. The extra power available was particularly noticeable when climbing the quite steep hills on the French Auto route resulting in a much more relaxed journey. I would like to congratulate you on a very good product.
Stephen Fenn, Essex
August 28th 2006
Ford Ranger TD
Just a line to enclose with the product registration form to let you know that Simon at West Auckland fitted the tunit and we are very pleased with it. The pick-up is on top of its work all the time and running very smoothly - it has pulled the livestock trailer to market several times.
B Starrow, Hexham
January 2007
Ford Maverick 2.7 TDI
Hi Andy,
So here's a big thankyou, it's been on for two days and I can't stop smiling. Just did a few 0-60 times and averaged 12.3secs.
The standard on a new car is 15.7, have that, cheers. Top job, well recomended.
Peter Jones, Cardigan
July 2009
Ford Transit
I had the Tunit installed to my Transit 90 hp just 10 days ago because the fuel economy was so bad ! To say I am pleased now is a big understatement. Before I got around 360 miles per tank before and now I am getting 410 per tank. The fuel economy was expected but the extra power took me aback. I actually like driving this nearly as much as my Q7 now which is booked in next week to have the same ! Thanks
Julian Grimmal, Adlington, Lancashire
November 2008
Ford Fiesta 1.4 TDCi
The tunit has increased the power and fuel consumption of my Fiesta by at least 10%. I used to get 58 mpg and have recorded 65 mpg when drivng steady for a whole tank. This was done on dual-carriageways into work.
Gareth Davies, Montrose, Angus
October 2008
Ford Focus 1.8 TDCi
Since fitting the tunit product I noticed smoother response from the engine even though the car was only 6 months old and obviously more power. Power difference showed more on the motorway when overtaking as plenty of power on tap without gear changes. Fuel consumption is good averaging just under 50mpg if i drive softly enough. Very pleased with the product.
Stephen Staples, Luton
October 2008
Ford Mondeo 2.2 TDCi
Easy to fit and a great benefit on fuel consumtion and performance
James Burns, Glasgow
October 2008
Ford Mondeo 2.0 TDCi
Not only the fuel saving but the car is smoother to drive and has more power through all the gear range.
Mark King, Loughton, Essex
October 2008
Ford Mondeo TDCI
The Mondeo TDCi has definitely inceased in power throughout the lower gears in particular (and torque has gone up).
Rob Waterfall, Gillingham, Dorset
October 2008
Ford Mondeo TDCI ST
Took it off the Jag & put it on to a 2006 Mondeo TDCi ST, fitted with a K&N Induction kit, on a trip to Manchester at no more than 70 mph on cruise control it returned 62 mpg!!, this was with the A/C on & 3 x passengers in the car, the car is smoother, and the pick-up is just awsome, my tunit was the 1st one fitted to a Jaguar diesel in the UK, and was set up on the rolling road at Chorley by Neil Bromley, It would be nice to find out what the ST is puting out in BHP, very happy with the TUNIT & the back up both from Chorley & the local agent in Newcastle
David Mellor, Sunderland
October 2008
Ford Focus 1.8 TDCi
Best advantage is the car had a flat spot when accelarating away this has been eliminated and vehicle has far more power for overtaking without even having to drop gears.
Gordon Glen, Glasgow
October 2008
Hino
Hino 700 FS
You are now my bestest pal in the whole world...and all that! After me ordering the box on the phone from you, it came well inside 24 hours and I fitted it myself after my first load at 06.00 in the dark, which is why it took about 3 minutes including tilting the cab! I have used it for one day on factory setting 5 to get used to the extra grunt the truck now has and will turn it up bit by bit. It is very noticeable that it has more power now because I can skip 3-4 gears when fully loaded changing up which is very strange (but I can get used to it!). Ill give it a go for a while playing with it and let you know by phone or computer message how I get on. Again thanks mate I think for the money it cost Im glad I didnt go for the re-map. --- Update - Received 24th February 2009: Hey Dan, Just clearing some stuff from my e-mails and found this. My truck has now done 330,000kms plus with the tunit box and is still on max power from the day I got it!! (I was told 535bhp). The engine uses no oil from service to service. How much does a 480 bhp Volvo cost? because a lad in a TARMAC 8x4 had a go with me last year and could not run with me from 40mph up until the speed limiters. Thanks lads I am still happy with my box. (driving like a **** does save fuel with the box though). All the best Mark
Mark Sullivan, Leyburn
22nd November 2007
Honda
Honda Civic 2.2 TDi ES
My husband has just had a tunit module fitted to my new car which is a Honda Civic 2.2 CTDi ES, I can say that it is fantastic!!!!!
Saly James, Colchester
12th May 2008
Honda Civic 1.7 d
The honda 1.7 is a good standard car but no guts. With the ever increasing fuel costs i took the plunge and purchase a tunit with a view to reduce costs on fuel. the end result never looked backed. The car has driving characteristics are so much better. Mid range is fantastic. Bigger cars are so surprised.
Rohit Nayar, Harrow
October 2008
Hyundai
Hyundai Tuscon 2.0 CRDi
Purchased tunit to add extra performance when towing. also found better erformance when solo, espcially when overtaking
Gary Sherriff, Wigan
October 2008
Isuzu
Isuzu Rodeo 3.0L
Very impressed. Noticeably improved acceleration and responsiveness as well as slightly better economy. Towing now much easier with heavy loads as well as being more fun to drive without. Well worth the money and much better value than paying manufacturer for same engine with higher power output.
Mike Sutherland, Aberdeenshire
May 2009
Jeep
Cherokee 3.0 V6 Grand Cherokee 2.8 C Patriot 2.0TD
Jeep Grand Cherokee 2.8 C
Tunit arrived in good time and was very easy to fit, the small picture helped a treat! On the first outing, with the dial still set at 5, the Jeeps MPG reading steadily rose and kept rising for about 150 miles or so giving me about 5 miles per gallon extra. With the dial set on at a lower number, would the fuel consumption increase further? The 0-60 time is not of huge importance to me as the jeep is fairly quick for its size anyway! Regards and thanks for your help again
Andy Weller, Cambridgeshire
18th August 2006
Jeep Cherokee 3.0 V6
Although these are early days I have already been agreeably surprised by the significant improvement in fuel economy registered by the car's onboard computer. Although this was never really a priority in purchasing the device it is certainly a welcome bonus.
I am a very satisfied customer and glad to have been able to find a device which my insurance firm were able to readily accept without increasing my premium too ridiculously, a device which is British instead of German or American, and a device which seems to perform as claimed.
J.S. Davies, Stourbridge
August 2009
Jeep Patriot 2.0TD
Since October 2008 I have had the tunit fitted in my Jeep Patriot, 07, Ltd, 2.0 VW, diesel. I am really impressed with the difference in performance (and I have had it in my Jeep for 7 months now). The main thing is the car became a springster. It's brilliant in low gears! I'd definitely recommend Tunit to whoever has modern VW diesel. My car is 4x4, and it flies and is certainly not thirsty. A big thank you for introducing me to Tuningwerkes in Croydon! My cars are now spik and span!
Kind regards
Stas Porokhnya, South Croydon
May 2009
Jeep Grand Cherokee 2.8 C
Has made a significant improvement in both mpg and performance. Has smoothed out auto gear shift, reduced turbo lag and no more plumes of black smoke when accelerating hard. Overall really impressed, considering buying one for the Wrangler as well.
Steve Palmer, Coalville
October 2008
Kia
Kia Sorento 2.5
On the 5th December 2006 I had a Tunit V-CR fitted to my Kia Sorento 2.5. I thought you would be interested to get some feedback on the change in performance before and after its fitting. The car is more lively with a better take-off from standstill and when overtaking vehicles at high speeds. Towing my caravan requires less throttle and again pulling away from standstill is much improved. These observations are, of course, subjective but I have also measured the mpg of the Kia solo and towing. When driving solo on local and longer trips I originally achieved 32-33 mpg. After the conversion I now get 36 mpg! This is excellent. Even better is the towing improvement. Before the conversion I got 22 mpg and after the Tunit was fitted I now get 26 mpg. Thanks also for the Millers fuel additive and the allowance for the K&N filter I already had. This has been one of the best investments I have made. I wish yourself and the staff a happy New Year and all the best for the future.
D Kenyon, Wigton
10th January 2007
Land Rover
Defender TD5 Discovery TD5 Discovery TDI 2.5 Au Range Rover 2.5 D Range Rover 3.6 V8 Range Rover Sport
Land Rover Range Rover 2.5 D
Brilliant added some extra power to a much undepeforming engine! Really easy to fit too
Tim Kearny, Tipton
October 2008
Land Rover Range Rover 3.6 V8
Noticeable increase in power and torque. Extra acceleration. Took mine to 110mph in what seemed like no time at all.
David Cotterill, GUERNSEY
October 2008
Land Rover Discovery TDI 2.5 Au
The landrover has inceased in both torque and power, but mostly noticeable in pulling the horse box up hills, rather than increased speed. But it is faster pulling away from junctions.
Rob Waterfall, Saliabury, Wiltshire
October 2008
Land Rover Range Rover Sport
The Sport was a different car once the tunit had been fitted,as soon as I left the Tunit premises I could feel the increased power and the acceleration was a lot smoother, completing the Cannonball 8000 run to Zagreb at high speed really showed the difference that the tunit made.
Derek Hunter, Preston
October 2008
Land Rover Range Rover 3.6 V8
Both latest vehicles have benefited greatly in terms of performance and fuel saving and I have had several on the different cars i have owned. Would always recommend.
Paul Spencer, York
October 2008
Land Rover Defender TD5
I run a Defender TD5 in Dubai, which is all city driving or desert sand driving. The Tunit has allowed me to be a boy racer around town and have enough umff to get up the bigger dune, neither of which was possible before the Tunit.
Martyn Roper, Dubai
October 2008
Land Rover Discovery TD5
I tow a trailer weighing about 2 tonnes and also a caravan which weighs approx 1.5 tonnes and since fitting Tunit I find it performs better when overtaking and also climbing long drags on motorways and main roads
Peter Clark, Finedon
October 2008
Lexus
Lexus IS220d
Your technical team were very helpful with assisting me to set up the unit and even put it on the rolling road. I was amazed to see the power/torque increases....brilliant stuff but the best advantage for me in these days of increased fuel cost is the added fuel economy...excellent product spot on service what more could you ask for well done guys.
M D Lister,
October 2008
Mazda
Mazda 6 2.0 CDVI
I purchased one of your units for the above vehicle last week at the motor show. I am impressed with the mid range torque and response, also an improvement of 5mpg!!! Many thanks for your advice.
Graham Bird, Bedfordshire
August 2008
Mercedes
C220 CDI CLS 320CDI E-Class 220CDI ML 270 CDI Vito 120 CDI
Mercedes CLS 320CDI
Got the Tunit....if I told you it took less than 3 minutes to fit...piece of cake. Have it on level 5 and will leave it there as there is no smoke and there is a noticeable improvement in performance (esp mid range...oodles more torque). Where the tunit does differ from the rest is that it is much more refined...I have had previous plug and plays...all these products were either full on or off which is not what I wanted for the Merc, which now is much more responsive. Regards David Received a week later... Nick Have had the tunit for one week so the honeymoon period is over...my thoughts? Its like driving a CLS 500 with the fuel economy of a diesel. I have left the module in position 5...the result oodles of torque...snappier acceleration and just all round a better car and would you believe smoother. What Merc are at with the standard ECU Ill never know. Tunit is streets ahead of previous plug and plays I have used.
David OMahony, Dublin
June 2007
Mercedes E-Class 220CDI
I thought I should write to you having had a Tunit fitted to my Mercedes E-Class 220CDI Estate. I have just completed a 600 mile trip this past week end, and am delighted at the improvement in all-round performance of the car. It is so much smoother, more responsive in the 2500-3000rpm range, and has delivered a significant improvement in mpg. I am what might be described as an enthusiastic driver, and although now 70 years of age show no signs of slowing!!!! Of course, one soon becomes accustomed to the way the car now drives, and easily forgets how it used to be. I am quite honestly surprised, and very pleased at the end result and have no hesitation in recommending this modification to anyone driving a similar vehicle. Thank you for your attention before the purchase, and I am glad to report that the service offered by your Peterborough Distributor was exemplary.
Roger Darby, Northampton
November 2006
Mercedes C220 CDI
It has transformed my C220 which has the older the older engine giving lots more low down shove and increased torque all through the rev range. I was rather bored with the car before I had a Tunit - now it is rather fun to let it rip from time to time. It astonishes other drivers on motorways with its rapid acceleration.
Clive Richard, Nottingham
October 2008
Mercedes Vito 120 CDI
Gives better response and when you get over the fun of having more power everywhere fuel economy is better and the powers there when needed
Mark Hillam, Watlington, Oxfordshire
October 2008
Mercedes ML 270 CDI
I have always had performance upgrade on all my cars history butthe Mercedes Diesel was my first. Having visited the motorshow and did some research tunit offered value for money and true figures to what is claimed. There was a huge difference when I fitted the Tunit kit that the egineer who installed it was very impressed. Here is an expample We drove on a stretch of road standard form and we hit 74mph at a marked point.After installing Tunit the same point we hit 89mph as the tourqe band was huge. Im pleased and well happy still reliable and savings on fuel agerage mpg gone up by 5-8mpg more.A good and worthwhile investment....
Anthony White, Middlesex
October 2008
MG
MG ZT 2.0 CDT
Unfortunately I cannot receive Men and Motors, but fortunately I do have my own Tunit device fitted to my MG ZT! and so together with my American car Hi-Fi system I can enjoy my own roadshow every day! What can I say, the V-CR Tunit device works exactly as advertised (how many products can you always say that about) and more. The engine now operates in the way the go faster looks and rear spoiler that were original to the car suggested it should. The pick up and acceleration are nothing short of phenomenal and the engine is turbine smooth and almost silent whilst cruising. The fuel consumption remains unaffected and driven with slightly less gusto is marginally better than before. Thank you for bringing such a brilliant device to market. A definite must have for anyone with a turbo diesel who wishes to exploit the vehicles full potential at such a relatively low cost witheasy installation.
Colin Norridge, Tatcham
24th July 2006
MG ZR 2.0 iDT
I have had the wiring looked at and tested and then repositioned and all is now working. Im very grateful to you for your help and advice along the way when Ive needed it. There is now a noticeable improvement especially mid range in both second and third gears. The bottom end is still sluggish and this has now been checked and analysed as a flat spot on the air flow sensor which needs replacing. Im very happy with the improvements the Tunit has made.
Daniel Hawthorne, High Peak, Derbyshire
September 2008
Mini
Mini Cooper D
Dear Sirs
On a recent long weekend to the Wye Valley in our new Mini Cooper diesel, fitted with your new chip, we covered 358 miles. On the journey down there we averaged over 78mpg.
For the whole weekend, on one tank of fuel, we averaged 74.7mpg, driving at normal speeds, not especially for economy.
The vehicle regularly averages over the mid fifties, just running about locally. We are obviously delighted with the vehicle's performance and frugality.
Yours,
Alan Stretton, Rochdale
July 2009
Miscellaneous
Miscellaneous
Just a quick note to say that I fitted the tunit over the weekend and the results are excellent. The smooth quality original characteristics have not altered at all, however the acceleration is much stronger and longer I have not been on the motorway yet so not sure what the MPG will be like Thanks for all your help
Mark Illingworth,
June 2004
Mitsubishi
L200 2.5 TD L200 animal L200 DCi Warrior Shogun 3.2 DiD Shogun Sport Shogun Sport 2.5
Mitsubishi L200 2.5 TD
I had my Tunit fitted Wednesday afternoon by Rob Cotterell.....the unit is simply awsome...very very impressive........but what impressed me even more was Rob Cotterell himself.....he was such a nice guy.....explained what he had to do......checked it more than once......explained how it worked .....wired it in ,so i could take it out myself if i ever sell the truck ......and then put it all back so you would never know it was there......totally professional and one of the most genuine mechanics i,ve ever met.
Lee Lyford, Oxford
23rd April 2008
Mitsubishi L200 DCi Warrior
I would just like to thank and compliment you and Tunit on your service and promt response to all the questions I had ... upon reciveving your product I had it fitted immediatly and was ovewhelmed with the performance increase having allready had the mitubishi power upgrade your product made the vehicle drive better than I could have imagined ... I have and will continue to sing your praises .. and promote the sales of the Tunit product here on the sunny island of Cyprus.
Adrian Forbes, Cyprus
August 2007
Mitsubishi Shogun 3.2 DiD
Thanks for all the information. I now have a 3.2 DID complete with your Tunit, which I ordered through my motor engineer. The difference in performance, economy and engine flexibility is staggering. An excellent product!
Tim Solutham, Stonehaven
July 2006
Mitsubishi Shogun Sport 2.5
Better performance, engine flexibility and response. Makes the shogun a _very_ good towing vehicle. Presently I have a camper conversion project in hand and will fit a tunit when complete.
Tim Moran, Hygga, Monmouthshire
October 2008
Mitsubishi L200 animal
Immediately saw a fuel efficiency increase of 4mpg. I have not changed way I drive and now I have much more acceleration under my right foot - comes in handy. I now will not be selling my vehicle for another year as its like having a new truck!
Tony Beardwood, Warrick
October 2008
Mitsubishi Shogun Sport
My vehicle was a sluggish mover but with the tunit fitted its a lot more nimble
David Taffinder, Wakefield
October 2008
Nissan
Navara 2.5 dCI D40 Navara 2.5 DITD Terrano II X-Trail 2.2 DCi X-Trail 2.2 DITD
Nissan Navara 2.5 dCI D40
Just to say thanks, fitted my chip last week to my Navara D40 and after trying others I am well impressed. Got it set on number 7 running fine so far, small hiccup when set on number 8 but torque is amazing. Will have to see how good fuel econ is when I start driving sensible again but I can't hep putting my foot down at the mo.
Richard Rimmington, Hull
April 2007
Nissan X-Trail 2.2 DCi
Hi Dan. Did an trip to London last weekend and drove sensibly, when I hit 350 miles where the light would normally come on, I had a quarter of a tank left. I went on to 401miles before the light came on. Great job, still got the power low down and over the moon at the economy. Thanks very much. Cheers, Mike Gregg
Mike Gregg, Preston
January 2009
Nissan X-Trail 2.2 DCi
I bought a Tunit unit for my Nissan X-Trail with some scepticism. I fitted it very easily and then the surprise, it transformed the car.
Much better acceleration, more flexibility and just much more enjoyable to drive, and all this from the standard setting. I am using no more fuel for this increase in performance, and use less than I was in normal day to day driving.
Go and buy a tunit, you will not be disappointed.
Nigel Trute, Maidstone, Kent
January 2010
Nissan X-Trail 2.2 DCi
Hi Daniel, we have been down to London and up to Newcastle a couple of times and still got the extra 50 miles to the tank. Performance still better than standard. If i push it obviously the MPG goes down a bit but still over the normal 350 to a tank. So still happy, if i need any fine tuning i will ring and pop over. Cheers
Mike Gregg, Preston
May 2009
Nissan Terrano II
In August 2001 I had a Tunit II fitted by yourselves to my Nissan Terrano II. After driving for a couple of months I would like to say I am delighted with the improvement the unit has made. It is much more pleasent to drive with the increase in torque from low revs and throughout the rev range. The extra power is great. Thank you very much. The lady on reception and your staff were very pleasent and helpful.
B Melling, Darwen
October 2001
Nissan Navara 2.5 DITD
Just a quick note to say how impressed I am with the Tunit I had fitted to my truck. On your recommendation I had the Tunit fitted at Car Media in Sudbury, Suffolk. All I can say is that they are a great bunch of guys, they are very knowledgeable and couldn't do enough to help. As for the effects of the Tunit, I'm most impressed, it has totally transformed the truck from a bit of a slug to a tyre-smokin' beasty! Since the Tunit has been fitted, I've found I'm getting around a 7% improvement in fuel economy, which equates to an extra 40 miles per tankful. So thank you for a very good product and service.
Steve Lake, Maldon, Essex
October 2006
Nissan Navara 2.5 dCI D40
There is marked difference in power mid and top range, don't really notice in low range due to chunky tyres, I think. Have not turned up the screw..... yet, but will give it a try someday, when I'm feeling brave! If there was one for my Audi S4, I would give it a go too.
Graham Hay, Banchory
October 2008
Nissan Navara 2.5 dCI D40
I need a large vehicle to transport me and my heavy shooting kit to competitions all over Europe. With fuel costs the way they are, economy on a day to day basis will always be a problem. But my Navara always does in excess of 30mpg with the Tunit fitted. The more I travel, the more I save. I once followed a Porsche Caynne for several miles in Germany on the autobahn. He slowed down at his exit to have a look at what had kept pace with him! So no complaints about performance either.
John Emmerson, Wakefield
October 2008
Nissan X-Trail 2.2 DITD
I have fitted the unit onto the X-Trail, it took about 5 minutes, it is now like a different car! I’m currently experimenting with the different settings but the car runs great on the standard setting. What I’m most impressed with is the change to the smoothness when accelerating, instead of the jerky delayed response the car now responds as soon as your foot touches the pedal. The torque increase is great and the power, in terms of smooth accelerating is amazing; I know it’s a 4x4 but it feels like a car when driven. The investment is well worth it given the scale of change to the performance; I’m sure once I stop taking advantage of the keen acceleration that I’ll start saving money on fuel but at the moment I can’t resist the temptation to floor it!
David Hayward, Pontypool
September 2008
Opel
Opel Meriva 1.3 CDTi
Hi Jerome, I purchased a V-CR unit for my Opel Meriva 1.3CDTI direct from you in early April, I have now had the chance to run it for a month and over 1000 miles. In a word "Superb". The little JTD engine has always been flexible and willing but a little down on power, especially on hills. This has now all changed, there is a lot more power at lower revs, the acceleration is better and it's quieter. I have not had a chance to accurately check the consumption but it looks as though I am using less diesel than before.
So a very happy customer.
Kind Regards
Bruce White, Plerguer, France
May 2009
Peugeot
Peugeot 406 TDi
Thanks very much for your recent service on my purchase of Tunit for my 406. I must say that the help, assistance and service from all of you has been first class and it has been a pleasure to deal with you. The true test came recently when I towed my caravan and awning to North Devon, where I noticed a vast improvement. Thanks for all your help again
R W Head, Chester
October 2006
Renault
Clio Clio dCI 80 Espace 2.2 DCI Espace 3.0 DCI Megane 1.9 dCi Modus Van 1.5 DCI
Renault Clio dCI 80
I started compiling this report to you in June, my Clio, together with it's Tunit, being 12 months old with 20,000 on the clock, but the sun kept shining so working outside took precedence over the computer. Here are some facts and figures on the cars perfomance. Most of my driving is on country lanes and B roads with some town miles, this type of driving gives regular averages of 36 mph and 67 mpg. I have made a number of trips to Southern England, doing most of my driving early morning to avoid delays. A typical round trip of 650 miles (90% motorway) giving averages of 69 mph and 61 mpg Lest you think I pussyfoot around, I had to replace a 4 Continental tyres at 12,500 miles, I guess the road surfaces on North Lancs roads are abrasive... Renault expect the Clio to return 67 mpg overall, but as I recall the long term test results in Diesel Car show consuption of their Clio to be mid 50's. Are the DC drivers thrashing their Clio, day in day out, or are the Renault figures overly optimistic? Either way I am more than happy with my Clio with the Tunit fitted. You may recall that my Clio was the first 80 bhp you had worked on and the Tunit was tuned to give maximum performance through the gears, rolling road tested at 103bhp. Once again thank you for your superb after sales customer service.
Keith Wilkinson,
June 2003
Renault Megane 1.9 dCi
My main purchase intention was to extract more performance for my car. Tunit provided me this additional performance that I was looking for. Soon after that, I began to see a slight reduction in diesel consumption and this was interesting. I adjusted my driving habits, taking into account the additional performance, and the fuel savings was more regular. It seems that I now have the best of both worlds - performance when I need it most, and low fuel consumption at other times. Tunit was really easy to fit and its adjustable performance levels allowed me to experiment and find the best compromise between drivability, performance and fuel economy.
Quincy Govan, Singapore
October 2008
Renault Espace 3.0 DCI
Since fitting the Tunit, my average fuel consumption has improved from 25 mpg to between 33 and 38 mpg and the performance of the Espace has become much more lively.
T I P Dummet, Cambridge
October 2008
Renault Clio
Purchased a Tunit for my Renault Clio in summer 2007. Found the installation easy despite being far from a mechanic! The staff were happy to talk me through any questions I had pre- and post- purchase. Unfortunately I was involved in an RTA in the Clio and have since bought a diesel Leon, which my particular Tunit does not fit. Obviously this is an unforeseen circumstance and I would imagine had I had the luck to continue with the Clio for a long time period as I had expected, the Tunit would have performed exactly as described on the site. I found fuel economy to be only very slightly improved (although I did upgrade to larger alloy wheels around the same time so this would undoubtedly have increased my fuel consumption from the original wheels), and I found a marked improvement in engine performance.
Sarah Thornton, Lanmark
October 2008
Renault Espace 2.2 DCI
Well, its amazing! I could not believe that fitting this little box would be like fitting a brand new engine. Power went up, so acceleration improved. We have an Auto box, and the changes became smoother. Then the big bonus - 14% improvement in economy on the school run, over 20% when doing long distance motorway. Previously our Grand Espace was stuck on 25.7mpg. since fitting the Tunit we get on average 29.5mpg. On the motorway, with a long journey we see 34mpg (before we'd be lucky to get 27mpg). So all in all, it makes for a better drive, better economy and is like buying a totally different car. Dealer serviced it recently and not a mention was given about the Tunit :-)
Mike Saar, Brackley
October 2008
Renault Modus Van 1.5 DCI
Excellent Fast Service. I found your employees very helpful even with after service, and also keen to answer any questions i had. Has given my car a well needed power increase and fuel economy is great.
Haydn Nord, Nantwich, Cheshire
October 2008
Renault Megane 1.9 dCi
Easy to fit, easy to adjust & a very different car to drive. Smoother gear changes, pick-up instant, acceleration mid-range incredible. All this & better fuel economy. Thank you.
Barry Hodgkinson, Telford
October 2008
Saab
9-3 1.9 TiD 9-3 TiD 9-5 1.9 TiD
Saab 9-3 1.9 TiD
Hi Dan, Have left it a while to thoroughly check my findings, and am very pleased - this last tweak, along wih the K & N filter means I am now locally on 44 to 46MPG, on a run 57 to 60MPG, the torque does not seem to be affected for it still accelerates in high gears from 1200RPM, and lots of torque by 1500RPM, but the even more surprising result over two longish but in traffic journeys tugging my 1500kg caravan gave me 36MPG, excellent. All on a tank top fill basis so no computer optimism included! This setting certainly suits the engine. Thanks and regards,
Ivan Buckland, Alsager
April 2009
Saab 9-3 TiD
Hi Adam, Just to say thanks for looking after me today, I thought the service was excellent, both in terms of the package (how easy it was to book my car in, how quickly the work was completed, the road test/instruction and of course the unit itself) and indeed how pleasant and professional everyone I spoke to was. Of course the real important thing to me is the product itself, I had obviously expected to see an improvement in performance based on what I had read on your website and indeed the various Saab forums I visit on the internet, however I can honestly say I got a bit of a shock when we went out on the test drive. At certain points in the range it really doesn’t feel like my car, there is a very clear surge of power from 3,000 rpm upwards which feels great! Had a very good run back down to Nuneaton, and really got to see what a difference it has made on the toll road! I am looking forward to learning the limits of my car all over again, I can honestly say that it feels like a new car altogether! Too early to say what the fuel consumption will be like, but given that I have been driving the car with real ‘spirit’ since the unit was fitted and the estimate on my fuel computer I think it will be at least comparible than it was prior to the Tunit being fitted. Would not delay in recommending you product or service to anyone, and I now hope to persuade my Dad to get his 530d done! Thanks for a great service
Tim Hutchinson, Cleveland
August 2005
Saab 9-5 1.9 TiD
I had to write you a note to say how most impressed I am with the box I had off you for my saab 95 TDI. It runs faster, smoother and better on diesel. I am a very happy man and thank you for the help you gave me.
Nigel Bird, Ilkeston
June 2008
Saab 9-3 TiD
It was very easy to install with the instructions enclosed,less than 10 minuites. With the K % N Air Filter I believe the engine is smoothness is greatly increased
Alan Kay, Limavady
October 2008
Skoda
Skoda Fabia VRS 130
Dan,
It's a great product, and apart from the extra power, there really is better fuel consumption. Something I didn't really believe before I fitted it!
The official figures for combined consumption are 5.3l/100kms (53.3MPG). With the tunit I am at around 4.7l/100kms (60.1MPG).
Best regards
Tim Prouten, France
June 2009
Skoda Octavia 1.9 Tdi
When I sold my A6 I traded my tunit for one to fit my wife's 1.9 TDi Automatic Skoda Octavia. the installation was straight forward although a little awkward because of the way Skoda clamps the leads. Once installed we started seeing a better than 10% improvement in milage on the VAG 1.9 TDi engine which on a long trip will often show in excess of 50MPG if driven carefully.
Michael Lacey, Northampton
October 2008
Subaru
Subaru Legacy 2.0TDI
Jerome/Dan
I appreciate its early days but I thought I would let you know how pleased I am after Tuesday. Well more than pleased!!!
What was an excellent engine before has now been improved no end all round. I find myself wanting to drive it for no good reason other than to enjoy the released potential.
For example I had to go over to Leeds late tuesday night the M62 was quiet so the best way to describe it is "I drove it like i stole it". For the purposes of testing it out. I dont mean just high speeds fifth gear an all round caning.
When I got home around 150 miles later i did a double take mpg was showing 48.6.
Although my car gets well used doubt if I have ever given it the grief it had then so the mpg was a big surprise. Conservatively that's an increase of 6 or 7 mpg.
When I revert back to my "normal" mode I am sure the mpg will be even better.
As you could see I am no boy racer just a car enthusiast so not interested in top speed or 0 to 60 mph etc.
But at the other end of the scale as part of my testing i took it on a local industrial estate tonight and just leaving at tickover had it pottering around in third gear no problem even on a slight incline. No judder snatching etc. Third is long legged as well. Not something you do often but just shows the other side. Prior to the Tunit wouldnt do that at all.
So as you can see I am well pleased to say the least.
Obviously I will monitor the mpg over a full tank but i think I know what the result will be.
Thanks for the excellent all round service I received you have a good friendly set up there.
Stuart Turner, Chorley
March 2009
Toyota
GXL Turbo Diesel Hilux Hilux 2.5 D-4D Hilux 3.0 D-4D Hilux Surf Landcruiser HJ100 4. Landcruiser LC90 3.0 Rav 4 2.0 D-4D
Toyota GXL Turbo Diesel
Hello Troy,
I thought that I show drop you a note about my satisfaction with the Tunit Model V-VP that was installed in my 2004 Toyota GXL Turbo Diesel 100 series Auto Station wagon.
This was the vehicle that was Dyno Tested at Labrador after installation.
The following are a series of consumption figures that I have achieved in the first month on the road.
| Kilometres driven | Fuel Used in Litres | Kilometres / litre | Litres / 100 km |
|---|---|---|---|
| 1142.7 | 165.18 | 6.92 | 14.46 |
| 836.6 | 96.70 | 8.65 | 11.56 |
| 573.9 | 76.80 | 7.47 | 13.38 |
| 609.9 | 81.90 | 7.45 | 13.43 |
The first reading was with the Tunit setting at 6 (as you had set it after the Dyno) and also included the climb through the hills to Canungra and then over Cunninghams Gap to Warwick with our
Rolly Knowles, Australia
Toyota Rav 4 2.0 D-4D
Have been running Rav on setting number 8 for a while and fuel consumption on average about 5% better than standard but because the engine responds better I do tend to drive quicker than I should so don't save as much as I probably could. Torque much better because I can drive in higher gears at lower speeds than standard set up. Tows 2008 Swift Challenger 480 really easily without too much gear changing. Have recently moved the control to number 9 and so far seems to have improved performance and torque even more. I was talking to fellow tower with standard Rav 2.0 D4D and he was saying he was disappointed that he had to keep changing gear when towing due to lack of torque. I did give him your phone number. Very pleased with the system in general. Easy to fit except for the silly place Toyota put the fuel rail connector plug.
colin Holmes, Hereford
October 08
Toyota Rav 4 2.0 D-4D
Had it fitted yesterday at Gorse Motors Barnham. The test drive was great and the drive home even better. Well impressed at this time - could be a good decision having it done, my Rav's performance is much improved. I may also get my Maxus van done later.
G Rasmussen, Suffolk
October 08
Toyota Hilux 3.0 D-4D
Excellent performance, an instant noticable difference
Matthew Hewes, Chelmsford
October 2008
Toyota Hilux Surf
I run my surf on bio-diesel and at times it would not pull. but now it runs smoother and quicker
Ian Bilke, Maidstone, Kent
October 2008
Toyota Landcruiser HJ100 4.
Originally found Toyota sluggish and fuel economy not great. Towing greatly improved as did fuel economy and performance
John Spencer, Halifax
October 2008
Toyota Rav 4 2.0 D-4D
Fun to own, fun to use.
Ray Roberts, Ellesmere Port
October 2008
Toyota Hilux 2.5 D-4D
They are fantastic, easy to install, I like the ability to adjust the box if you want low down pulling power or top end speed, and it paid for itself within a couple of months what more can you ask for.
Alastair Moss, Buxton
October 2008
Toyota Rav 4 2.0 D-4D
it does what you said it does on both ecomomy and performance but my reason for purchase was performance and this im very pleased with
Graham Rasmussen, Suffolk
October 2008
Toyota Hilux 3.0 D-4D
It does exactly what was claimed
R Wright, Swaffham, Norfolk
October 2008
Toyota Landcruiser LC90 3.0
I was interested in fuel economy and visited the Co.s stand at the London M.Show. Very professional service in acquiring the right unit for my car, I installed it myself and technical support was first class with Tunit staff really interested, helpful and available when I needed them. The very best customer care. Product really makes a differnce in performance and economy.
Paul Mcdonnell,
October 2008
Toyota Hilux
The Hilux is used to tow machinery and tools to and from jobs every day. These can be up to 30 miles away. A trailer is being towed nearly all the time with either a tonne or so of topsoil or hardcore or a mini-digger in. This is why the large torque gains where so beneficial to me and the company. This extra torque meant that the fully laden trailer could be pulled at far lower revs resulting in huge gains in fuel economy. The extra power when the trailer is taken off from the tunit still impresses me everytime.
Joe Ainscow, Bury
October 2008
Vauxhall
Astra 1.9 CDTi combo 1.7cdti Corsa 1.3 CDTi 90ps Vectra 1.9 CDTi 150
Vauxhall Corsa 1.3 CDTi 90ps
Bought a tunit box after having a D**K tuning box and I have to say the tunit box is far superior and I am amazed at how much kick it give the 1.3 CDTi Corsa.
Paul Goodwin, Congleton
October 2008
Vauxhall combo 1.7cdti
as a sameday courier covering 90k miles per year I am always looking for ways to save fuel. I obtained a tunit unit. It improved my motorway fuel consumption at 70mph from 43mpg to 45-50 mpg. I have now exchanged it to fit my new 1.3 Doblo van. My 1st 400 miles job got me 37mpg but when I fitted the tunit I got 45mpg doing the same motorway journey.
Robert Dakin, Plymouth
October 2008
Vauxhall Astra 1.9 CDTi
Cheers for doing the car today, it's fantastic now! I'm noticing a much better fuel economy already.
Nina Colquhoun, Preston
September 2007
Vauxhall Vectra 1.9 CDTi 150
I have recently fitted a tunit to my Vectra 1.9 CDTi 150bhp. I cannot believe the results, because not only has it improved performance more than I expected, but also, even with a heavy right foot, I can report an extra 6 mpg around town, increasing to 8-9 on a journey. Well worth the money.
Bruce Woodfield, Poole
September 2008
Volkswagen
Volkswagen Golf
Instant power great bit of kit wish i brought one years ago!
Joe Tapp, Milton Keynes
February 2010
Volvo
Volvo
Just wanted to update you with progress. No problems fitting the unit now - quite clear where the little tinker is supposed to reside. Plug fitted in-circuit in about 10 mins then a bit of head scratching on where to position the unit itself. In the end I went for what looks like a redundant plastic bracket at the front of the air filter assembly on nearside (I'm thinking plastic might reduce vibration somewhat) and the cable routes alongside other cables on top of the rad. This also makes it easy to uninstall for service time (I'm a bit paranoid about Volvo dealer whingeing about warranty etc. so I'll take the short time to remove and refit as it's so straightforward). Couldn't resist tweaking the dial from 5 to 6 but won't go beyond that - no need in retrospect. Results: Amazing! Very, very impressed that such a straightforward addition can provide substantive and noticeable all round improvements - without any apparent compromises (are there any?) - specifically: - Engine is much smoother, particularly at idle up to about 1600 rpm which is normal 'about town' traffic; is also smoother at motorway speeds - Noticeable improvement in power/torque at mid- high-range rpm and certainly faster pick up from low revs - there was a considerable 'lag' before that has reduced considerably. It's a different drive. - After just one weekend and about 250 miles of mixed motoring the mpg meter is returning an improvement of +2mpg to normal (now just over 48mpg) - I've not got over this before and I'm certain with some longer runs this is going to be much improved - I'll let you know in a month's time how it's going. End result - very happy for now. What I don't understand is how or why Volvo with all their R&D capability can't deliver this on the car itself? Or is this just 2 years of technology development? Thanks a
Keith Godbolt,
Volvo V70 D5
easy to fix. does increase power and helps fuel efficency
Ian Robertson, Berwick-upon-Tweed, Northumber
October 2008
Volvo S80
Good improvement to smoothness of volvo D5 (not the smoothest diesel in the world) and noticeable low-mid range power. Very happy with improvement.
Kieth Godbolt, Hook, Hampshire
October 2008
VW
Bora 1.9 TDI-PD Bora 1.9TDI 115 Golf 2.0 TDI Passat Scirocco 2.0 TDI Touareg 2.5 Touareg 3.0 TDI V6 Touran 2.0 TDI 170
VW Golf 2.0 TDI
Received chip for Martins car and installed it in 5 minutes. Was extremely impressed with the improved power and torque. Martins son and myself both picked up new 2.0 tdi Golfs today so I imagine you will be getting an order for another 2 in the not to distant future. Thanks again very impressed with the chip and service you have provided.
Daniel , Australia
April 2006
VW Touareg 2.5
The tunit absolutley transforms the car. I was beginning to wish I had bought the 3 litre, but no need now. Brilliant service and product, I will spread the word. I think most people are sceptical of these things, but once tried you become an instant believer, and a very happy one at that. Regards
Haydn Lipscombe, Birkenhead, Merseyside
January 2009
VW Scirocco 2.0 TDI
Hi
With regards to the Scirocco I can make a number of observations since the Tunit has been fitted:
· The fuel consumption has improved with the journey back from Silverstone showing 61.5 mpg travelling at an average of 80mph the car having 3 passengers plus me and a boot full of luggage. The overall average is holding at 53.5mpg being approx 8% better than before the unit was fitted.
· Performance wise the pulling power has noticeably improved giving a sense of urgency to the acceleration. The set up of the Scirocco with its lower profile wider tyres and sportier suspension seems more than able to cope with the increase and I would suggest that it could manage a little more. This is born out with the introduction of the 260bhp S3 version recent shown in the Top Gear Mag.
· The drivability is still as good as before the mod.
Thanks
Nigel Kearney, High Peak
June 2009
VW Passat
Well, words can't describe it. I think that I said to you that I never expected to change my other Passat and this one was in fact a most unexpected present (some present!!) and I bought the tunit, which makes the car absolutely stunning. It is such a wonderful combination of power, torque and flexibilty; I find it breathtaking - as do all passengers to date. I can hardly wait to see how it performs with the caravan when I set out tomorrow. I will send you a postcard from Provence to let you know what the verdict is, but I know that it will be superb. I have always loved cars, but have never driven anything like this. I just can't thank you enough
hazel ,
May 2003
VW Bora 1.9TDI 115
I’m really pleased with the Boras performance since you worked your magic. 283 lb/ft of peak torque and minimum 234 lb/ft (the standard spec peak) available between 1700 and 3200 RPM has transformed the drive. The motorway overtake manoeuvre is now: let the car pass by, accelerate (in 6th) and pull out - oh and then brake to avoid running into back of the car that has just overtaken me :) Well pleased. We have a trip to Lindisfarne next week in Northumberland and en route there are a few longish A road climbs where it should excel. I’ll keep you posted about my MPG. Follow up email, received 23rd October 2007: Hi Dan, I thought I would give you an update. The Bora performed extremely well enroute to Holy Island up in Northumberland. It was always good on hills, but now they cease to exist!. I think the fuel consumption remains as good as it was before the Tunit was fitted, 61 MPG on the trip covering the 200 miles in 210 minutes with a full load and a tide to catch avoid gives little cause for complaint! My perception is that 4th gear now accelerates the way 3rd used to do and 6th in turn accelerates like 5th did. But of course has a much wider range which is redoubled because the torque hangs in much longer. Imagine if it had a seven speed box. I would also like to thank you again for the excellent & conscientious service you provided.
Nick Ridgeway, Essex
Oct 07
VW Touareg 3.0 TDI V6
The Touareg power is smother & it feels quicker 30-50. 50-70 etc.
David Pearce, Hinckly, Leicestershire
October 2008
VW Bora 1.9 TDI-PD
My VW is smoother when accelerating through the gears, pulling stronger from lower revs. Motorway driving is more relaxed with the extra top gear pulling power. Very pleased with my tunit.
Alan Cooper, Coalville, Leicestershire
October 2008
VW Golf 2.0 TDI
Very impressed. I liked it that much I even wrote a review of it in the Volkwagen Driver magazine. April and May issues 2008.
Frank Guest, Wirral, Merseyside
October 2008
VW Golf 2.0 TDI
After fitting had laptop tune. Tested on Tunit rolling road and tested against Golf 2.0TDi 170bhp by VW Driver mag. More power and torque than the 170 plus would pull in 6th from 1000rpm. This is now a very quick car delivering 50+ average mpg.(or more if you take off the lead boot)
Nigel Kearney, High Peak, Derbyshire
October 2008
VW Touran 2.0 TDI 170
I won TUNIT through VW Driver Mag. I have been very impressed with it, especially the way in which it has improved the driveability of my vehicle.
Christopher Purvis, Exeter
October 2008
