Fast friendly service from everyone involved. As yet to notice a fuel economy increase. But certainly a monster increase on power.

Thanks to Tdi Tuning for fitting my tuning box today, to say it has transformed the vehicle is an understatement, the tech was great and talked me through the box etc. really is a great bit of kit. It has taken away all the lag when pulling away and as for overtaking its a breeze and its only on setting 4. My MPG has already improved so im very pleased. Once again thank you.

Superb product, really helpful in terms of explaining the benefits and effects of everything and giving advice for future mods on car! Honestly amazing!

Fast and efficient service

Purchased a tuning box for my sluggish Jag xe 2.0d...I got it for the potential performance enhancement so went straight to top tune and I was not disappointed. Throttle response is so much better and lag reduced...feels almost like a petrol at times. Really happy I took the plunge. Easy to fit too.

I can't recommend TDI Tuning highly enough! Once again, their service and products have been exceptional. I've had their tuning solutions installed on three of my vehicles, and I’ve never had a single issue. Most recently, I visited their workshop in Chelmsford, Essex, to get some tuning done on my brand new BMW X7. As always, the experience was flawless, and the results speak for themselves. TDI Tuning has also provided units for my previous BMW and my wife’s Mini Cooper S, and I’m impressed with the noticeable performance improvements in all of them. The tune on the Mini Cooper S, in particular, was super easy to install—so minimal effort was needed, and the difference is night and day. I’ve always trusted TDI Tuning for their expertise, and their service has been nothing short of outstanding. The performance gains are real, and I’ve never encountered any issues with any of the vehicles that have been tuned. If you're looking to enhance your vehicle’s performance with reliable and top-quality tuning, TDI Tuning is the way to go! Worth noting if you ever do have issues and it's a self install, more than likely you've installed the wiring harness incorrectly. Just give the support team a call and they will get to the bottom of your issue and have it working in no time. I spoke with one of thier technical staff in detail when I was there and he clearly knew his stuff.

Very clever guy he knows his stuff

Brilliant place. Free fitting on a tuning box to our afford Ranger. Friendly, fast, and efficient!

Bought a Bluetooth kit for my civic from TDI Tuning, had a hiccup on their end with the harness. Had to send back, but not a worry, the entire process had full communication and quick response. The kit came back and was easy to install, and works a charm. Get a huge noticeable difference in performance. Amazing customer service and product.

I asked a few questions before buying, they were answered swiftly and with great detail. I ordered the tuning box for my Cupra Formentor and fitted it with ease. Up and running in 10 mins. The instructions were very easy to follow. The car performs well without the box, with the box it is wow!

Very good product. I have used a couple on different cars petrol and diesel

Slightly awkward to connect the leads to my engine, but once connected up it was very easy to setup and a stunning difference once up and running. Very happy overall

A little disappointed to be honest, impossible for a diyer with biceps to install so a 140 mile round trip to fit, first unit kept making the van not start, they upgraded the unit at my return postage cost. I did receive the upgraded replacement unit quickly but now I can't go above setting 3 otherwise the engine check light comes on and dangerously I get about 10% power, not good down a dark road, with traffic, approaching a hill! I was advised not to use settings 4-7 and it'll be okay, I paid for power, not a mediocre gain. Disappointed, was offered a new download but they would have just spread the maps out with no gains! If it's just a fuel pressure map I'd avoid, a map to adjust the boost for it.....maybe.

Such a fast service from initial order to delivery! Box installed in 10 minutes (after finding a T27 torx bit). Perfect instructions, easy to follow. Once fitted I did my commute home on setting 4 as its bang on 20 miles…. Then set the box to 7 and put my foot down, such a difference to standard! Thanks TDI Tuning! Fyi Leon mk3 2.0 TDI 184ps standard.

I ordered a tuning box for my VW Crafter 2020 140ps model as I always wanted to increase a bit of power, but I was always worried that it might cause damage to the engine or something else as the van is still under warranty, but after I did some research, I decided to give It go with this company. It arrived very quickly. I didn’t get a chance to fit it straight away. I fit it after a few days, and I encountered a small problem as I couldn't figure out where to plug it in. I emailed the office with a picture of my engine, and they replied very quickly, explaining with arrows on the picture to show me where the plugs are located, which helped a lot. After I fit it, I went for a drive, and I couldn't figure out if it were actually helping or not. I was kind of disappointed, and it had a bit of weight at the back, so I thought I would keep it for some time; after driving for a week, it was time to take the van to the dealer for regular service, and I had to remove the box, after I start driving without a box then I noticed that it's was very slow and sluggish, damm I was wrong about this box. As soon as I got the van from the dealer, I installed it back straight away, and now I cannot drive without one as it does make a difference. The fuel economy is much better, and power delivery is excellent, more fun to drive. These guys were fantastic and after-sales service and are so helpful, I cannot rate them enough. Many thanks

Insane difference to the car - installed in 3 mins and changed how it drives to be so much better, faster and more efficient. Fast shipping to Australia also.

I wish to thank the TDI tuning team for the great product and also I wish to congratulate them for the great after sale support that they offered me. A very polite team of people that gave me precise information over the phone and in a follow up email that very quickly made me identify what I had done incorrectly. A very polite and professional service. I also wish to add that my vehicle has been transformed and I can't wait to go on a long journey to fully appreciate the new found power and torque and if I get some additional mpg that will be a nice bonus Thank you all again. Best regards Michael

My dad and I were really impressed by how dedicated this company is to helping you get the best experience. A truly excellent level of service that you rarely see these days.

Been using TDI Tuning for a long time now, over the years I've had 6 cars fitted with there Tuning boxes from ST's, BMW's, Seats, VW's and yes even a vauxhall and quite frankly I wouldn't use anyone else. Guaranteed no stupid over tunes like many other cracker Jack companies.....or boast. The configurations are always spot on any time I've had questions or issues (which they've normally been with the car I.e a sensor) they're straight on it and can easily send a altered map directly through their app. Will be spending many more years with this company as I know I'm not going to be sold a tale. Good work guys

Bought a tuning box for my BMW X1 25d , fast delivery with easy installation and OMG what a difference, not just power but fuel economy as well even on the highest setting .