Excellent gains to my 520d mSport, really feel the difference and improved MPG. Just upgraded to the 535d mSport and getting the box remapped to suit the new car. Great service and support. You won't be disappointed!

Great service, great product, glad I chose TDI, my BMW 640D m sport is now ultra responsive, smooth and revs quicker, the increase in tq and power is immediately obvious and makes the car even more fun to drive. If you are thinking of a box you need to choose the one from these guys!!! Im one happy customer.

Got a box last week fitted in no time = Not sure about top speed yet....but power it as got . As I use the van for work and play well impressed renault trafic 2015 2 mx bikes and 26ft caravan not a problem...thanks TDI Tuning. ..

Great service very quick and efficient very professional noticed a difference in my car straight away will definitely recommend to anyone

Great service very quick and efficient very professional noticed a difference in my car straight away will definitely recommend to anyone

I've used other companies to improve performance on my cars but spent fortunes. TDI TUNINGS box was a fraction of the cost. It was fitted within 10 minutes and ready to road test. The power delivery is now much smoother and instant. The torque is massively increased. And the car rockets along. Fuel consumption hasn't ordered that I've noticed. The best bit is the box can be removed ready for use with my next vehicle. I wished I had used these guys before. My ST petrol focus now feels like an RS Thanx guys. And they make a good cup of tea too

Got my tuning box for my bmw 4 series came next day has made a massive power difference to my car and can really feel it pull a lot more. Also been getting 65mpg on the motorway. Can't go wrong should of done it sooner!!

Had a crtd2 on my Audi A6 for a year or so,sent it back to be reprogrammed for my new A7. Came back in two days and boosted the bhp to 310 and increased my mpg by 8-10. Always great service and a great product,what's not to like?

Ordered the tuning box and came the next day so brilliant delivery, Once it was installed it was instantly noticeable huge improvement on what is already a very good car (new Audi S3 saloon) the throttle response and grunt just puts a smile on your face even doing the national speed limit

Came in with my Golf Plus TDI 2ltr today had a box fitted...excellent works boy's noticed a big difference in performance after running it in!! I could recommend this to anybody with a diesel motor :-) thanks TDI Tuning

Great product excellent service very helpful would recommend to all my friends

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!