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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

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Rated 5 out of 5 stars

The last 3 months have seen us travel…

The last 3 months have seen us travel to Lightning Ridge, west of Bourke, the Sunshine Coast and Moreton Island. There could not be a more diverse experience. And it was bloody amazing. Total (instant) control is something that you’ve yet to experience. And it is a game changer for my 2019 Toyota Hilux Rugged. It really is the best money you’ll spend on a great Retirn on Investment

January 16, 2026
Unprompted review
Rated 5 out of 5 stars

2014 Mitsubishi L200

I installed the Chip in my 2014 Mitsubishi L200 at the end of January so been running with it for about 3 months and it’s been spot on! Have had the chip on setting 4 most of the time I’ve had it and that seems to be the sweet spot for me. A very noticeable power increase which makes the truck a lot better when towing and getting roughly an extra 6mpg ( more on a longer run). I wanted more power and I got it and extra mpg is just an add bonus.

April 17, 2026
Unprompted review
Rated 5 out of 5 stars

Fantastic experience

Shipping was super quick from the UK to Australia, the kit was easy to fit and works well, easily saving 10% fuel and when I dial it up... OMG the power

April 17, 2026
Unprompted review
Rated 5 out of 5 stars

Great quality tuner, easy to install, noticeable extra power!

Very responsive and knowledgeable sales staff, who were able to get me the correct tuner for my plug-in hybrid model, which wasn't listed on their site. Installation was a breeze; two-wire hookup to plug the tuner box into two sensors and then plug the wires to the ECU into the two T-connectors. The materials quality of the box and harness are great; they look and feel like OEM parts. There is a very noticeable boost in engine power. Plus, no check engine lights, and the unit can be removed in a few minutes to put the car back to stock if I need to take it to the dealer. The bluetooth connection to the box is good, and only one time over the last several months wouldn't connect, but did the next time I started the car. I am very happy I found such a relatively affordable, good quality and easy to install tuner product from TDI Tuning. The only negative was that they're based in the UK, so there were tariffs on the purchase, but that is not their fault and I knew that going in.

April 17, 2026
Unprompted review
Rated 4 out of 5 stars

Delivery and product was great

Delivery and product was great, it has definitely made a difference to my car and I'd recommend it, only reason not for giving 5 stars is that your given a paper instruction sheet, It'd be helpful to have a digital copy of it to for a just incase

March 1, 2026
Unprompted review
TDI Tuning logo

Reply from TDI Tuning

HI Isaac, we couldn't confirm which order was yours but please get in touch with sales@tdi-tuning.com and we'll get you the digital instructions for your engine! Thanks

Rated 1 out of 5 stars

One of the worst experiences of my life

One of the worst experiences of my life. 2 weeks after installing a TDI Tuning box my van completely broke down, loss of power. 5 component parts that are all linked to the TDI Tuning box were broken including 3 sensors, 1 turbo and 1 intercooler. The engine still smells of burning today.
One of the worst aspects of the experience was the technical assistance of which there was none. If you have problems with this part the company appear to completely leave you in the dark. Conveniently for them you can't definitively prove their part caused your engine to catastrophically fail so they get away with it every time.

January 2, 2026
Unprompted review
Rated 5 out of 5 stars

Disclaimer: the below is what might convince you to buy this! Don't blame me haha

To start with I want to say customer service and technical support is on point when it comes to TDI! The team is awesome and big shout out to the technical team for their assistance!

Ok now to the tuning box itself. If you, like me, have done research and now come to the reviews to determine whether you want to purchase and need a detailed review read ahead!

I purchased the tune box for a BMW 530d (G30/B57) and I was not disappointed! After having done a decent amount of driving and testing the box at various settings my conclusion is: compared to some of the other tuning boxes on the market the biggest stand out for the TDI is how OEM the increase in torque and power actually feels. Not naming any names but some of the other tuning boxes available that offer higher numbers (that I've personally tested and had on other vehicles with similar engines) won't give such a fluid increase in delivery. Best way to describe it : feels like BMW mapped the car/or I have a larger engine of the same engine family. The increase from the offset (at the generic setting 4) is noticeable, the additional torque adds a linear pull through the gears. Having the triple channel tuning box with rpm connection makes a real difference to the actual delivery of power. I must say the box is designed and made to add to your car fluidly and not just give you 'power in a straight line' kinda map. Acceleration through the gears is fluid and if you're a spirited driver like me you'll notice how much more you're able to achieve from your car on the UK's b roads!

The additional features such as the timer from start are small details that helped me make my decision to go with TDI - I'm a disciplined driver, personally I give my engine a cold start and usually wait till it's at temp before giving the engine a good blast however it highlighted the level of thought put into the engineering behind the box that there is a timer - it's not just a tuning box that will give you more from your engine, its designed to also protect and keep that engine from any premature failures.
Installation is a breeze and the instructions that are provided are bang on! I personally had issues locating one of the sensors and the teams response times and assistance was awesome! Honestly stop reading reviews/thinking about it and just order it! You won't be disappointed 👍🏽

March 17, 2026
Unprompted review
Rated 5 out of 5 stars

Triton MR 133KW

Fitted a module to my Triton MR 133kw about 40000km ago.

Power is insane with a huge gain in mid range torque and pulls hard all the way to the redline(Mode 7).

After sales service is next level with nothing being too much for the boys.

Definitely recommend TDI Tuning fantastic product backed by great support🤙

March 25, 2026
Unprompted review
Rated 5 out of 5 stars

13 year old TDI Tuning Box

I bought my Audi Q3 TDI S line plus 13 years ago and put the tuning box on the car 3 months after I purchased the car.

I cannot recommend this product highly enough. Since I fitted the box 13 years ago, there has never been a single issue with it. I almost forgot about the unit.

The first thing I noticed after fitting the tuning box was a very noticeable increase in the torque, it was like a 50 HP power increase, amazing the difference it made.

The second bonus was an extra 10 miles per gallon in fuel consumption.

I have just sold the car and advised the new owner of the fitted TDI tuning box. He had heard of them and was more than happy to leave the box in situ.

I should have written a review years ago, but it was only when I sold the car I remembered how long ago it was since I fitted it.

I might work out how many £££s the box saved me in increased fuel consumption over the last 13 years, it’ll be much more than the cost of the box that’s for sure.

Overall, It’s a great product and I highly recommend the company and its tuning devices.

March 10, 2026
Unprompted review
Rated 5 out of 5 stars

The best customer service experience ever

I came across the website looking for a complete delete bundle for my 2013 Volkswagen Jetta TDI. I had several questions and other websites will strictly email for communication purposes. TDI Tuning had a number to call and speak to someone. I was given a personal cell phone number whereby texting and communication was responded to in seconds answering any and all questions. The prices under delete kits are unbeatable. Customer service was phenomenal. I can't thank them enough.

February 22, 2026
Unprompted review
Rated 5 out of 5 stars

Do not hesitate and buy this Tuning Box.

Spoke with Mason at TDI on Monday explained to him that I had a Tuning Box fitted in my Previous car (Jaguar XF) unfortunately that car failed its MOT after 15 years and 140,000 miles so I purchased my new car a month ago a Jaguar XJ and he explained that they could re-programme my box to fit my new car. So, today I visited there offices where they re-programmed and fitted my box within 1 hour and boy what an improvement. Can only say that if you are interested in tuning your car do not hesitate and give them a call.

February 5, 2026
Unprompted review
Rated 5 out of 5 stars

KGM Korando, equipped with a 1.5 T-GDI petrol engine and a manual transmission.

Hello,
I would like to share my feedback after installing the tuning box.
Before the installation, my average fuel consumption was between 8 and 9 L/100 km.
After installing the tuning box, my average consumption dropped to between 7 and 8 L/100 km.
This represents an average fuel consumption reduction of about 12%, with a noticeable improvement especially when driving uphill. The car pulls much better, throttle response is smoother, and turbo lag is basically gone, without increasing fuel consumption.
The vehicle is a KGM Korando, equipped with a 1.5 T-GDI petrol engine and a manual transmission.
I am using the tuning box in Mode 4, and my driving style is normal and calm, without aggressive or fast driving.
Overall, I am very satisfied with the tuning box and the real-world results.

January 26, 2026
Unprompted review
Rated 5 out of 5 stars

Turning box

Easy transaction, fast delivery time
Very easy to fit with clear instructions
Gives better tractability with a good choice of maps

December 18, 2025
Unprompted review

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