I've had my TDI-Tuning box fitted to my 2016 SEAT Leon Cupra 290 for 15 months now and I love it! My car was 286bhp standard and my car made 347bhp at a recent rolling road meet with the TDI-Tuning box. The figures I made are within 3bhp of the claimed figures so I was really please with the gains. The car pulls much harder and the difference is night and day! My fuel consumption is the same as stock but the car is much more powerful. I couldn't be happier. I'm fortunate to live local to TDI-Tuning Manchester and their customer service has been fantastic. Stuart is a genuine guy and a fellow petrolhead. I've been to TDI-Tuning a couple of times since having my box installed by them to have it removed for when my car goes into the dealership for servicing and warranty work. They are always very welcoming and confident in their work and products. Very happy customer. 5 Stars.

Great service from start to finish. They took the time to clearly explain everything involved in the process. The car runs perfectly with the box fitted and has made a huge difference to the performance! Thanks again!

Ace piece of kit. Sound guys.

Vauxhall Astra GTC 2.0D If you drive one don’t hesitate any more and install the magic box straight away. Turbo lag disappeared and the mpg went from around 50 to 60. I am very impressed. The only downside is the price but good things are usually expensive...

Brilliant product! Super fast delivery and very easy to install. My Audi A4 is now a beast thanks to you guys. So much better on fuel as well. Would definitely recommend this for any car!

Just fitted the crtd4 box to my Audi TT, and it’s been a fantastic upgrade, power is amazing and still with complete drivability. I’m very happy with the results �

Installed the box today. Once it had run in felt the gains. The guys over at Manchester we’re great, massively recommend!! Car Mercedes E220d Coupe.

this is my 2nd unit as changed cars and it makes such a difference in its drivability A , highly recommended......

Had a tuning unit fitted yesterday and feel a big difference in my car, so far I’m pleased and would defo recommend also the staff where very helpful !

Bought a tuning box from tdi tuning for my seat Ibiza 2.0 tdi fr, installed it after a bit of faffing about but that was due to the make of my car and where the boost sensor was. I took the car out for a proper run today and wow it was super responsive and when I put my foot down it went like bab off a shovel � overtaking is a breeze now and my economy went from average of 50-55mpg on the trip to 61.5mpg! It's early days so far to know more about the box and reliability ect.. but for now I am very impressed! ��

Thank you so much guys just had my 4 series 435d done today. I can already feel the difference and definitely a lot more responsive and reduced turbo lag. And the thing is it’s only in mode 4. Can’t wait to put it in mode 7. My car will start flying. Excellent customer service and friendly staff thank you so much I will await to fill up on a full tank of fuel to assess the general fuel consumption. Ryan North London

Easy to install, makes a significant difference in acceleration on the higher levels and a much better MPG in lower levels.

fabulous service, easy install and noticeable improvement in performance

This company is absolutely brilliant!.. I'm on my 2nd Tuning box, and I can truly confirm that it's giving me more MPG and extra power. Don't hesitate to phone them and they'll be glad to advise you..

I had a setup problem with my CRTD4, sent an email to TDi, not really expecting anything until next tuesday because its Easter. Anyway, I received a reply within the hour from Stuart and what he suggested made it barely a two minute fix. Amazing support for an amazing product, I have spent the day frightening myself silly with all that extra grunt.

Just put the tuning box on my 66 plate 335d xdrive and it’s unbelievable, easy to fit and hasn’t produced any faults what so ever. Thank you excellent service.

Absolutely spot on service, had one fitted today at the Manchester branch, great communication talked me through everything, Most importantly if you haven’t got one go and book it now and have one fitted, it’s unreal how much quicker and responsive it is. Fuel economy has improved considerably. All round great piece of kit (quality) fitted expertly,i showed it to my mechanic who was impressed by the quality of the product. Sorry I’ve gone on a bit but it does what Td tuning say. Phone and book.

Bought the TDI tuning box for my Vauxhall Corsa E 1.4Turbo. I can honestly say it has transformed my car, everything about it is better, the power, torque and the smoothness of the engine. And despite having some difficulties fitting the box, TDIs technical department were spot on, providing a fantastic service to myself, would recommend to anyone.