Absolutely tremendous service. Love the power and economy gains and brilliant customer service. Wouldn't hesitate to use again.5*

Brilliant product and service, made a real difference to a VW T6 150. Now drives better than my VW T6 204 used to ! Highly recommend !

Made a big difference to my scirocco tdi would highly recommend.

Great customer service and quick responses. Very happy with the product

No TDI should be without this Tune. Simple to install and the power and economy are both measurable. A high quality build and the company was a pleasure to work with.

Found out about your company from vloggers TravelTrolls. Had the unit fitted in Manchester..it has transformed my 84bhp campervan into a fire breathing 104bhp monster!! Great product. I like the ability to change the power settings on my phone as well. Would recommend this product.

Prompt delivery easy 10 min installation with the Descriptive instructions tailored to my car

I now have a completely different vehicle. The throttle response is instantaneous, the acceleration is blisteringly fast in Sports mode yet still smooth in Comfort mode. There was also an improvement in fuel consumption. Delivery to my door was just 26 hours from ordering. Thank you very much to everyone at TDI.

So far ive had no problems with it! Certainly more power from the engine and i believe im noticing fuel savings on settings 4 or below.

Great item, aftercare wasn’t necessarily the best, but very happy with the tuning box itself, great performance results

Great product, been using their different versions over the years on different models. They make the car come alive, more responsive, better performance and improve the fuel economy. Keep tweaking it up to see where it goes

I purchased a tuning box for my seat ibiza fr sport 115, I was really nervous as I fitted myself at home with basic car knowledge but a few months on and the product is great. Customer service responded to my messages promptly also, really happy with my purchase

A complete no brainer for anyone who has a new car warranty! The difference in performance is night and day when the TDI Tuning module is fitted! You know its good when your wife says “holy sh.. what did you do to the car? I took off down the road like a scalded cat!” Im not new to the tuning game, over the years I have had many cars remapped and unless your going to change major hardware (turbos etc) don’t waste your time! I have also experienced a ‘bricked ecu’ during remapping and its a total nightmare! May I add I have also previously bought a tuning module from another well known brand and the performance gains were very poor on a vehicle that should have shown great gains! I was worried my experience with the TDI module would be the same but I can assure anyone considering buying one that its fantastic! The extra bonus is for a small fee I will be able to transfer it to my next car. Its a fantastic product

I can't rate the customer service as I've had no need to use it. The extra torque and horse power changes my BMW 2.0 diesel for the better especially around town. Hardly need to change down now it's great

Very happy with the purchase of a tuningbox from TDI Tuning to my 2017 Isuzu Dmax AT35. Massive difference in power n torque, makes the truck way more responsive. Recommendable!

Looks good. If you can afford the cars they tune up

I ordered a unit for my Audi A8 50 but initially there were issues with the car juddering under hard acceleration. TDI Tuning were keen to resolve the issue, taking the box back for checking and reflashing it. This didn’t work. Then they sent some new maps but they didn’t work either. Ultimately, I took the car to their base Chelmsford for 24 hours where they wrote a map for the car. Turns out each application of the engine is different friending in which model it’s in and mine has the 48V mild hybrid which was why the map didn’t work. It’s now absolutely flying and they couldn’t have done more to get it to work. I’m really impressed by their professionalism and keenness. To resolve the issue. Highly recommended.

Fitted CRTD4 to my Mercedes E350d (W212) following a good experience with my earlier E320 Cdi (W211) using the CRTD2. Locating and fitting the wiring loom near the turbo at the bulkhead was a little awkward - but the tech support team were able to help by phone and email with additional diagrams (on this V6 engine there is another connector on the car which looks similar to the boost sensor). As with my previous, the torque and performance benefits were immediately evident. However, after some weeks of different driving circumstances, I concluded that when my car was in default Economy mode, when not driving aggressively, gear changes were a little sluggish in traffic. In Sports mode, gear changes and accelerator response much better - but at maximum output accelerating at high speed on motorways, a slight engine hunting was evident at box setting 7. TDI agreed to look at the installation at their Chelmsford premises (FOC) which I though would be worth the 70 mile e/w drive for me. The tech team made some mapping adjustments with the box and, so far after 6 weeks, all seems much better. I understand that there is an online mapping update service via the Bluetooth interface in development which would be a great advantage to customers who don't live close to a TDI centre. Overall, I am very satisfied with the product and service from TDI-Tuning and I can't imagine owning a car anymore without a box fitted! Richard (London)

Great difference on MPG like a flying machine

These guys know their stuff about performance enhancements