TDI Tuning Reviews 1,545

Quick delivery, and a very good product. Has improved my Insignia no end. The car's overall performance is impressive, and I'm very happy with my purchase.

Quick response from Jake on a pairing issue, that was my fault. Easy peezy solution that solved my issue.

What a treat to deal with TDI Tuning! From start to finish, the whole process was 1st class. Pop in your reg and hey presto, kit is listed with all the benefits and a great price! Once it arrived,the colour photos and instructions were very easy to follow and was all done and dusted in about 40 mins(non mechanic) Love the performance,even in mid scale one the app via bluetooth. Definitely a giggle on setting 7 but I don`t think my tyres would last too long though! Brilliant company,brilliant bit of kit at a brilliant price,thank you!

Good instruction, delivered a promise along with a good product.

Easy to fit, wiring loom was spot on.

Performance gains seem to be as described, but have not put on a dyno

Amazing! we had owned an Octavia VRS before and missed the extra performance over our standard Octavia, your tuning box has given us the performance back and made the car more responsive and lighter feeling. We even get a slight improvement in mpg!

Sprinter 2.1 camper , Installation was easy went on a 1800 mile run the first 500 miles set on 1 . Pmpg 29.4 then set to 4. mpg went to 34.5 so I’m impressed next run trying going to play some more

All good
Does everything it says it should do

I was looking for a way to improve the economy of my 2.2 Diesel Discovery Sport. The tuning box I fitted, which was an absolute doddle, has not only increased my mpg to 40+ everywhere, it has also ironed out the hesitation when setting off and made accelerating a joy. It really has put the Sport back into the name.
It really is a great box of tricks and I thoroughly recommend it.

XC90 and Abarth 595.
Both fitted with a box.
Great results on performance and economy.
Highly recommended.

I have purchased a few of these over the years through TDI and I have always appreciated the improved driving experience. Installation can be a bit fiddly however the instructions and pictures do help.

From the first contact the TDI tuning were very professional.The item turned up exactly as described and was a very quick install. I tow a caravan along and to be able to switch modes whilst driving through the app is a great addition.
Can't recommend highly enough.
I am an independent purchaser and have no affiliation with TDI

The instructions were clear and I found the plugs straight away.

I have used this company twice - once for the initial unit and then a second time for it to be programmed for a different vehicle. On both occasions the units have worked exceptionally well. I would recommend and use again.

Great Service and great customer service

Quick delivery and product works great.

Second chip I’ve had. Easy to install. Great benefits to car.

An absolute joke of a company.
Order a chip in early December 2025. After a week, it hadn't arrived, and the tracking indicated that it was being returned to TDI due to being refused at delivery.
When I informed TDI, they said they would send it out again when it came back. A week later, when I asked again, they stated they hadn't had it back. I then just asked for a refund, which they agreed to.
Another week later, when I asked about my refund, they stated the refund had been done (lies, lies ,lies).
They are now saying they are not refunding this until they receive it back and blaming FEDEX for it, even though it was sent by Parcelforce.
DON'T RISK YOUR MONEY WITH THIS COMPANY. there are other who do the same product.

Waste of money was quoted a power increase of 42 horsepower and car has no performance gain whatsoever and acceleration is unchanged

I recently bought a tdi tuning box for my Audi SQ5 after having used this product a few years ago on an Audi A3 with great results.
Delivery was quick as expected.
The harness was so easy to fit, it took less than 15 minutes.
After starting the car for the first time a coil and engine management light came up on the dashboard.
I gave the team a call for some help and the customer support was second to none.
A technician had called me back within 10 minutes and talked me through potential issues and fixes.
After following the advice and refitting the harness the problem was fixed, no more lights on the dashboard.
Noticeable performance gains were there from the first drive, solid power right through the rev range and consistent improved efficiency of around 5-7miles mpg.
Cannot rate this product and the team highly enough and would recommend they products to anyone. (Which I already have and two of my friends have theirs on order).