TDI Tuning Reviews 

1,574
TrustScore 4.5 out of 5

4.6

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Review summary

Created with AI, based on recent reviews

Considering 175 reviews, reviewers overwhelmingly had a great experience with this company, often praising the product's quality and the noticeable improvements it brings to vehicle performance and fuel economy. Customers frequently highlight the ease of installation, with many describing it as a simple plug-and-play process, and appreciate the prompt and well-packaged delivery service. The company's customer service is also commended for its professionalism, efficiency, and willingness to assist, even offering free fitting at their HQ for those who faced difficulties. However, some people experienced issues with the product, such as difficulty with Bluetooth connectivity or the unit not working as expected, leading to engine problems or a lack of noticeable performance gains. A few other people also felt that the installation could be challenging for certain car models, and there were occasional complaints regarding delivery services not directly managed by the company.

What people talk about most

Product

People report positive experiences with product, with many customers expressing satisfaction with the... See more

Quality

Consumers are generally satisfied with the quality of the products, with many reviewers expressing happiness... See more

User experience

Reviewers mention positive feedback about user experience, highlighting the ease of installation and... See more

Service

Users describe positive interactions with service, highlighting impressive customer care, quick responses,... See more

Delivery service

Customers generally report positive experiences with delivery service, frequently highlighting quick delivery... See more

Reviews shaping this summary

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

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

The box has taken my already cool VW Transporter to a whole new level. I got it primarily for the increase in economy the bonus is the extra torque/performance I now get. I was having problems fitting... See more

Rated 5 out of 5 stars

Web experience was a bit confusing for a US Volvo. However, one email to support and I had the correct kit number for my motor. Shipping was quick and well packed. Installation was straightforward wit... 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

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Asks customers to review

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Replied to 75% of negative reviews

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4.6

All reviews

(1,574)

171 reviews in the last 12 months

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Rated 5 out of 5 stars

Easy to fit, great results

It's been 3 months since I got my order from TDI tuning.

Great instructions were provided that were so clear, my 15 year old daughter fitted the leads for me(smaller fingers were useful, but she didn't need my guidance at all!).

Once fitted we followed the instructions to get the ECU working with the tuning box. Then on with the Bluetooth and give it the beans!

The Power change on my Seat, whilst modest, was instantly noticeable. Fuel economy over the months I've had the box has been almost identical to before, and I use the extra power often.

If I drive sensibly with the chip on a low setting, I see greater MPG than before install. Very handy during oil price hikes!

I drive the length of Wales twice monthly on A roads, and the balance of economy vs power has been incredible. The power when shooting from 35 to 60mph (maybe a little over) is staggering. Top end isn't affected, but getting there is much quicker.

10/10 product. BUT...
I can't help feel the Bluetooth control should be standard for all. That's my only criticism!

Very happy customer, and I'll consider TDI Tuning again in future if I buy a car with a locked down ECU again. In fact, I might just get one for the wife's car!

January 9, 2026
Unprompted review
Rated 5 out of 5 stars

Transformed my truck immensely

I use my 73 player Ford ranger XLT for towing. I’ve been very disappointed with its power so was very close to spending a further 8k on a wild track. As these ECU’s are blocked and can’t be mapped I found TDI tuning. For £350 I took a gamble to see if it worked. After 10mins I had it all plugged in.
Cut a long story short it was the £350 I’ve ever spent. It has transformed the performance of my truck immensely. I have it set in mode 5 all the time for towing, daily driving and motorways and it never skips a beat. I have now done 5k miles with no issues at all.
I’m not one for leaving reviews but this definitely deserves one.

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

24 Kia Cerato gt

Communication was excellent, even asking for a picture of the engine bay, to make sure I received the correct box. Arrived quick, and installation was simple. Boost gains are insane, when on setting 7 turn traction control off, to avoid it kicking in.

January 15, 2026
Unprompted review
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Rated 5 out of 5 stars

TDI piggyback system install on Mk8.5 VW GTI

I installed the TDI piggyback system on my 2025 VW GTI 5k miles ago. It has performed flawlessly and I can feel real gains in torque. The only surprise was the $180 tariff levied after the purchase. Not a fault of TDI but it may be helpful getting a reminder from them that their product is subject to a tariff.

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

Top firm

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-up only required then this firm has best priced pre-set up boxes tuned per car type/make. Links to blue tooth very well allowing enhancement of BHP by 1-7 levels on mobile. Box can also be hidden easily.

December 15, 2025
Unprompted review
Rated 5 out of 5 stars

Absolutely first class service

Absolutely first class service. After a brief conversation over the phone I opted for the Bluetooth version. It arrived on time and was well packaged. The installation instructions are spot on and with in 15 minutes it was installed and I was up and running.
I’ve noticed a vast improvement in performance and fuel economy.
I thoroughly recommend TDI Tuning to anyone.

January 26, 2026
Unprompted review
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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
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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

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