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Review summary

Created with AI, based on recent reviews

Considering 151 reviews, reviewers overwhelmingly had a great experience with this company. Customers consistently praise the product for its quality and the noticeable improvements it brings to vehicle performance, including increased power, torque, and fuel economy. Many people also highlight the excellent customer service and the helpful, knowledgeable staff who provide great support and advice. The user experience, from installation to daily use, is frequently described as straightforward and efficient. However, some customers encountered difficulties with installation, particularly concerning hard-to-reach connections or brittle connectors. A few other people also felt that the product did not deliver the expected performance gains, or in rare cases, reported issues such as engine lights, reduced acceleration, or even significant engine problems after installation.

What people talk about most

Product

Users describe positive interactions with the product. Many reviewers praise the significant increase in... See more

Quality

Reviewers mention positive feedback about quality. Many customers are impressed with the performance gains,... See more

User experience

Consumers generally express satisfaction with the user experience, highlighting ease of installation and... See more

Service

Customers had positive experiences with service, consistently praising the impressive customer care and... See more

Staff

Reviewers highlight positive aspects of staff, consistently praising their helpfulness, knowledge, and... See more

Reviews shaping this summary

Rated 5 out of 5 stars

Bought a few items from this company over the years and no complaints. Easy to get on the phone or mail and respond quickly. Blutooth app linked to their tuning box is a gamechanger, so simple straig... See more

Rated 5 out of 5 stars

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 f... See more

Rated 5 out of 5 stars

I had difficulty installing the sensor connection under the cooler matrix and cpu on my son’s 2016 Mercedes SLK 200. In truth - I couldn’t even see it - never mind safely disconnect/ reconnect. Th... See more

Rated 5 out of 5 stars

So after waiting, waiting and waiting for over 3 years for the Bosch ECU to be cracked on my VW Transporter for remapping I gave up and took the plunge to purchase the appropriate chip for my vehicl... See more


Company details

  1. Auto Tune Up Service
  2. Car Accessories Store
  3. Tuning Automobile

Written by the company

A tuning box connects to the engine of a vehicle to improve performance and fuel economy. It’s the natural successor of the remap, an easily detected ECU tuning solution. TDI-Tuning write custom maps for every vehicle variant. These maps are then sent to the engine from a tuning box rather than writing them directly onto the engine ECU. The TDI-Tuning Box works for over 6000 engine configurations. Our customers have installed them on boats, tractors, and agricultural vehicles. Installing a TDI-Tuning Box takes less than 15 minutes in most scenarios. They come packaged with specific annotated instructions. If you still need help, our technical team are on hand Monday-Friday. Take a look at our blog posts here: https://tdi-tuning.com/en-gb/blog. You will find a vast collection of previous installs, customer feedback, and much more! We have been tuning cars for over 15 years now, constant technical development and advancements within the automotive industry keep our technical team working hard to improve future functionality and compatibility. Find your car today on our website using our vehicle finder. If you are in the UK, all you need to do is put your registration number in, we will do the rest.


Contact info

4.6

Excellent

TrustScore 4.5 out of 5

2K reviews

5-star
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1-star

Replied to 78% of negative reviews

Typically replies within 48 hours

How this company uses Trustpilot

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Rated 5 out of 5 stars

TDI install first class.

Really good service started working on my car as soon as I arrived gave me a completion time and it was ready on my return, Engineer showed me the installation and explained it functions and how to disconnect and bypass should I need to do so, connected to my phone and demonstrated how to operate it. Really great set very clean and respectful of my vehicle I have recommended to a number of friends.

31 July 2025
Unprompted review
Rated 5 out of 5 stars

Great people to deal with.

Great people to deal with.
I had a technical problem and was called back by a person who knew the subject inside out, no hesitation or bluffing, just accurate problem solving fact.
That along with good prices and delivery, make them first rate.

20 September 2025
Unprompted review
Rated 5 out of 5 stars

The advice was very professional

The advice was very professional. The delivery went smoothly. Installation was very easy with good instructions. And now our Sprinter has plenty of reserve power again, which is great fun!

10 January 2026
Unprompted review
Rated 5 out of 5 stars

had one fitted to my ford territory 2.7…

had one fitted to my ford territory 2.7 turbo diesel , fuel consumption from 10.4 to 9.2 ltrs to 100 kms, and the power increased around 15%, for the price a bargain love it very much and would recommend to anyone thankyou TDI tuning

14 January 2026
Unprompted review
Rated 5 out of 5 stars

Easy to fit

Easy to fit. Found it really easy to use. Depending on your travel plans set the unit, via your phone, before leaving. I needed a little more power at acceleration and found it by setting the unit higher.

3 January 2026
Unprompted review
Rated 5 out of 5 stars

Parts arrived very quickly

Parts arrived very quickly, we were able to fit them as instructed and they worked as intended, even the average fuel economy was better. Very happy with the service and the TDI unit.

16 October 2025
Unprompted review
Rated 5 out of 5 stars

M340i…

Response time to the order was instant and then received it just as quickly.
Easy to install following the detailed instructions and initial testing shows promising results so far.
Even on the middle setting I'm getting great mileage.

14 January 2026
Unprompted review
Rated 5 out of 5 stars

Really Good experience

Pre-sales assistance over the phone was really helpful and reassured me about my purchase and ease of installation. Once ordered the package was despatched immediately and arrived very quickly. Installation instructions were easy to follow and I've had zero issues with the unit in the 6 months and 6,000 miles since.

4 August 2025
Unprompted review
Rated 5 out of 5 stars

Customer Service

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

1 January 2026
Unprompted review

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