Works great.. you feal the response straight away... does save fuel ( don't know how it does that )..so easy to put in yourself, and take out if you want.. my car is a Merc coup 250 diesel. Thanks TDI TUNING. ...

Received my tuning box today I can hardly believe the difference it has made to my 180 transporter dsg it's turned it into the van vw should have built power is progressive and smooth and the extra torque is amazing Also averaging 5 mpg more I will be recommending your product to all my friends Thank you all so much for answering all my question in relation to your product

Received my tuning box next day fitted it( one of the easiest things I have ever fitted on a car) and straight away seen a difference in power just waiting to see diesel saving excellent product

Have used tdi tuning now on my van and car, fantastic staff,very helpful. Very pleased with the performance and figures I get from the product. Would recommend to anyone that wants that bit extra from your engine.thanks again tdi team

OK after I wrote a bad review about this company I would like to apologize, there was a few unforseen problems to begin with but all that has been sorted. So many thanks to Terry who fitted the unit for me and took me for a test spin. My car now pulls off faster then ever before and when driving at 70 in 6th gear just put ya foot down and you can feel the torque just busting to give you whip lash so 5 stars from me. If want a car with a bit more poke then give these guys a bell

I thought my grand cherokee 3.0 crd ran great till I had the tune box fitted now performs even better thanks

Shit hot boxes made a great improvement on my 1.9tdi Passat

Fitted a tuning box to my Mk6 Golf GTD, Awesome, 205bhp, bags more power, and 60mpg between Edinburgh and Inverness!

Amazing product. Made a real difference to my car. No lag and more power, the car feels alive. Not too sure about fuel economy but that's not what I bought it for. Thanks a lot for staying behind late on a Friday afternoon to help me out, it's much appreciated. A real professional outfit and the product really does work.

Amazing product. Made a real difference to my car. No lag and more power, the car feels alive. Not too sure about fuel economy but that's not what I bought it for. Thanks a lot for staying behind late on a Friday afternoon to help me out, it's much appreciated. A real professional outfit and the product really does work.

Great product, great service. 2nd remap, love it..

Fitted to my BMW 118d sports plus edition coupe tremendous difference to the way the car pulls and fuel consumption it's just what they said it would gain easy to fit took ten minutes massive congrats to the tdi boys

Fitted to my BMW 118d sports plus edition coupe tremendous difference to the way the car pulls and fuel consumption it's just what they said it would gain easy to fit took ten minutes massive congrats to the tdi boys

Just fitted the tuning box to my Mercedes C200 CDi and had a quick spin, came back grinning, there's a marked improvement! Can't wait to finish work and have a proper drive! A very good company to deal with, even a courtesy call to check the delivery address. Very happy customer!

Fitted one to my BMW X3 and the fuel economy has gone from 34 mpg to 48 on a journey. Performance is much proved as well..!!

Awesome piece of kit took a 1.9ddis grand vitara from 35mpg up to almost 45 with excellent pull all through the revs.

upped my mpg on a 180 4motion lwb dsg multivan from 28 to 35 !!! also more torque (noticeably), glad I've fitted it.

We've fitted a few now for customers, all of which have been really pleased with the results whether it's an increase in overall power or a noticeable gain in fuel economy, thumbs up from us!

Absolutely fantastic service! Bought the tuning box for my seat ibiza 1.2tsi and works a treat.

Wow! So impressed with the difference the CRTD2 has made to my 60 plate Audi A3 140 ps. Feels like a different car! Thanks guys you have been very helpful throughout.