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 .

Excellent service

Really happy with my tuning box, I had a bit of trouble locating 1 of the connections, but I spoke to 1 of the technicians at tdi who arranged for me to bring my car in and help me with the fitting, it only took 10 mins to fit, and wow what a difference!, the throttle response is a lot smoother and quicker, also seems like the lost power has been restored, I would highly recommend tdi tuning, a great service and excellent after sales help, 10/10.

Just bought a tuning box for a mercedes c350e and couldn't get it to work,thought I would go and speak to the company directly rather than emailing them. 1 off the mechanics was really helpful in explaining the issues and actually fitted the box for me,saving me the hassle. Many thanks.

Couldn't speak more highly of TDI Tuning! Box came quickly and managed to get it installed, with some technical help, easily! Car feels completely different and as it should from the factory!

So it's 5 stars for the Company, even though the product itself didn't work for me. I have a really uneconomical car, and I was probably hoping for a bit of a miracle but in short, I tried the performance chip and it didn't work out, the Company were really helpful and the returns process was handled swiftly. I know from other people and other reviews that the product itself really does work for a lot of people, and I would highly recommend using this Company.

Recently had my tuning box reprogrammed for my new car Outstanding service and speedy delivery. Very happy with the increased performance from this little box. 10/10 Highly recommended.

Great company. Friendly and very knowledgeable with all things tuning. Fitted me in last minute to have a box fitted and super happy with the results

I ordered a tuning box for my sq5 on Thursday afternoon. It arrived Friday morning. I didn’t get a chance to fit it until Sunday and I encountered a small problem. I left it and rang the office Monday morning and they told me to bring it straight up. In 40 mins I was heading back to Kent trying to take in how much better the car was driving. Fuel economy much better and power delivery outstanding. These guys give fantastic after sales service and are so helpful I cannot praise them enough. 5 star treatment. Many thanks