While we don't verify specific claims because reviewers' opinions are their own, we may label reviews as "Verified" when we can confirm a business interaction took place. Read more

To protect platform integrity, every review on our platform—verified or not—is screened by our 24/7 automated software. This technology is designed to identify and remove content that breaches our guidelines, including reviews that are not based on a genuine experience. We recognise we may not catch everything, and you can flag anything you think we may have missed. Read more

Review summary

Created with AI, based on recent reviews

Considering 150 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 and fuel economy. Many highlight the ease of installation and the significant gains in power and responsiveness. The service provided is frequently described as professional and efficient, with many people appreciating the quick turnaround times and the helpfulness of the staff. However, some customers also noted difficulties with Bluetooth connectivity and occasional issues with fitting certain connections. A few other people felt that the product did not deliver the expected performance gains, or in rare cases, experienced some unexpected vehicle behavior after installation.

What people talk about most

Product

Customers had positive experiences with the product, reporting significant improvements in vehicle... See more

Quality

Clients share positive opinions on quality, with many reviewers praising the product's ability to deliver... See more

User experience

Reviewers express satisfaction with the user experience, highlighting the ease of installation and operation.... See more

Service

Consumers find service to be positive, with many praising the impressive customer care and quick responses.... See more

Staff

People report positive experiences with staff. Customers consistently praise the team's knowledge,... See more

Reviews shaping this summary

Rated 5 out of 5 stars

Their product range is great - plug & play. Staff/Owners are so generous with time/advice. i ordered & received box & then asked if they could fit it - took <1 hr & was done for free. If L1 car tune-... 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
4-star
3-star
2-star
1-star

Replied to 76% of negative reviews

Typically replies within 48 hours

How this company uses Trustpilot

See how their reviews and ratings are sourced, scored, and moderated.

Companies on Trustpilot aren't allowed to offer incentives or pay to hide reviews. Reviews are the opinions of individual users and not of Trustpilot. Read more

Rated 5 out of 5 stars

Ssangyong Rexton

I own a ssangyong rexton and you guys were pretty much the only company that could supply me a unit and the prompt service and the kit being easy to fit and having a photo of the correct engine and plugs made it so easy to fit .Being in Western Australia didnt make it easy either but over all really happy with the device and it gace me what i wanted out of the vehicle .

October 17, 2025
Unprompted review
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.

July 31, 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.

September 20, 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!

January 10, 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

January 14, 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.

January 3, 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.

October 16, 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.

January 14, 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.

August 4, 2025
Unprompted review

The Trustpilot Experience

Anyone can write a Trustpilot review. People who write reviews have ownership to edit or delete them at any time, and they’ll be displayed as long as an account is active.

Companies can ask for reviews via automatic invitations. Labeled Verified, they’re about genuine experiences.

Learn more about other kinds of reviews.

We use dedicated people and clever technology to safeguard our platform. Find out how we combat fake reviews.

Learn about Trustpilot’s review process.

Here are 8 tips for writing great reviews.

Verification can help ensure real people are writing the reviews you read on Trustpilot.

Offering incentives for reviews or asking for them selectively can bias the TrustScore, which goes against our guidelines.

Take a closer look