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
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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
Unit 223, Waterhouse Business Centre, CM1 2QE, Chelmsford, United Kingdom
- 01245392255
- sales@tdi-tuning.com
- tdi-tuning.com
Replied to 76% of negative reviews
Typically replies within 48 hours
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Caused significant engine issues
Caused significant engine issues, refused to honour 30 day refund policy, refused to follow up on any information regarding warranty issues, didn't reply to emails further than one return email. Will be following up with consumer affairs. Dodgy business, poor quality. DO NOT BUY IF YOU LIKE YOUR CAR.

Reply from TDI Tuning
Great product
Great product, technical support is first class and extremely helpful. Performance of the unit is great, much nicer car to drive now. Will certainly use again if I change cars
The best £350 I have ever spent
We purchased a tuning box for our Swift motorhome as it lacked a little bit of power. What a difference this Tdi-Tuning box made, loads of power to climb the hills and plenty of power to pass on the motorway. We also opted for the bluetooth control which is brilliant. You have several different modes to choose from. We've found that in mode 5 we have more than enough power and it is better on fuel. It's the best £350 I have ever spent. I cannot recommend Tdi-Tuning enough.

Reply from TDI Tuning
This will be the second time I fitted a…TDI running box
This will be the second time I fitted a tuning box, the first was my L322 2004 Range Rover TD6 which transformed the drive of the car.
I Han now bought a twin Chanel for my 4.4 TDV8 L405 only took 15 minutes to fit from lifting the bonnet to putting it back down
Really easy to fit, I can’t believe the difference in power, it’s like a different car, more responsive and better gear changes.
First Class support and company
From the sales experience, to the support from the technicians, getting this tuning module was a breeze for my Focus ST. I've enjoyed great after sales support from Chip, Jake and Alex as well, who were incredibly kind and patient with me.
My second "box" and will happily continue to recommend this product and team to friends and family.
Thank you guys
10/10 for customer service
Had delivery of a new car and the support I received from TDI Tuning has been perfect. From start to finish even before I had got my car they advised me on what product I needed and even created a car specific fitting guide for me to ensure this new model engine would be easy for me to fit. Customer service is 10/10 and I cannot rate this company enough for that. Thank you for your support.
Just installed one of these on my 2021…
Just installed one of these on my 2021 Ssangyong Rexton. It never hung around before, but the difference now is massive. Whole thing took me less than ten minutes to fit and my engine is still as smooth as it was before, only now with more options to play with. Highly recommended, especially if you tow a lot.
Fuel sensor removal on my Golf 2.0 tdi Mk7
While fitting the TDI Tuning box to my Mk7 Golf 2.0 tdi, I ran into difficulty trying to remove the fuel sensor connector.
However, after viewing the video clip that Alex at TDI Tuning provided, I was able to remove the connector without causing any damage.
I fitted this to my 2015 Audi A4 Sline…
I fitted this to my 2015 Audi A4 Sline about 6 weeks ago.i thought i would give a few weeks running before leaving a comment. It took about 15 mins to install with the easy to follow instructions. Gains are excellent with a huge noticeable difference once you’re in 3 gear and up when in mode #7. Fuel economy when driving nice n easy is better also and I’m yet to do a good motorway journey in #1 to see how good they really are. To be honest I’ve never been out of mode #7 and noticed benefits in performance (huge) and fuel economy. I also opted for the Bluetooth connectivity via the app, it’s a 👍🏼 from me. I would definitely recommend this race chip to everyone as no complaints or issues here🤙🏼😎
Exceptional performance tuning experience
I recently had the pleasure of using the tuning program from TDI tining, and I must say, it has transformed my driving experience. From the moment I engaged with their professional team, I felt assured that my vehicle was in capable hands.
Their tuning hardware is impressively user-friendly and delivers noticeable improvements in speed and responsiveness. I was amazed at how seamlessly it integrated with my car's existing systems. The program allowed me to customize settings to suit my driving style, making the experience truly personal.
What stood out to me was the clarity of communication throughout the process. The team provided detailed explanations of how the tuning works and the specific enhancements to expect. They also offered excellent customer support, promptly addressing any queries I had.
After installation, I noticed a significant increase in throttle response and acceleration. My car not only feels faster, but it also handles better, making every drive a thrill. It's evident that TDI tuning prioritizes quality and performance, using the latest technology to ensure optimal results.
I wholeheartedly recommend TDI tuning to anyone looking to enhance their vehicle's performance. Their dedication to excellence and customer satisfaction is truly commendable.
Very helpful and the product worked as…
Very helpful and the product worked as it should. Happy !
Stay far away dont believe the reviews
I ordered tdi tunning box for my veloster turbo . Nothing but problems car idles horrible black smoke from the exhaust. When you try drive car goes into limp mode now im out 345$ box and 155$ race spark plugs got ruined from this box plugs loaded with black carbin from being to rich .I run a Facebook group 30k followers for veloster nation hoping find something to review and to use for people with velosters other then racechip and jb4 .this product is not it hopefully it can be refunded. To make matters worse they make you pay return shipping close to 75$ .they offer a 30 day return on there site .don't disclose you have to pay custom fees and a very high return fee in usa . If you get a product doesn't work you are out of luck.

Reply from TDI Tuning
Quick, practical solution
Two weeks ago, I bought you a TDI Tuning Box for my car (2020. Ssangyong Korando C300 1.5 T-GDI). I like to say that I have very positive experiences with the box. I didn't measure the engine performance, but the driving experience improved a lot. The car starts more dynamically and accelerates more intensely. There is often no need to redeem the automatic transmission while overtaking on the highway. I use it on setting 4 because the others do not change anything (feel) or weaker than 4. So far, I have only had a rewritten ECU cars because I had strong reservations about tuning boxes in general. The TDI Tuning Box is the first boxed solution I tried and surprised its effectiveness. Congratulations to the developers for their conscientious job and thank you for the product!

Reply from TDI Tuning
I had heard good reviews about TDI
I had heard good reviews on a Honda S660 owners page about the TDI tuning box and had been mulling it over for a while. The S660 is gr8 but a bit more power without a hassle is always handy. I purchased one and within days it arrived in Aus, well packaged and presented. I fitted the tuning box and it was simple and very neat. The S660 has been transformed and has noticeably more power/torque.Yay!! For a very easy upgrade I can highly recommend TDI tuning. Thanks guys.😎
I installed the tunning box in my audi…
I installed the tunning box in my audi A6 4G 3.0BITDI and the results are amazing🙏🏻 my Audi is like a airplane now just in the number 4 😂
After 64 kilometers i can change it to 7 maximum power will be super
Is amazing performance this deserves more than 5 stars
I own Two TDI Boxes
Having already purchased a TDI box for my KIA Stinger GTS a while ago, I was so impressed at the performance gains that I went ahead and bought a 2nd one for my wife's Puma ST.
She was not disappointed! Better MPG and around 30 bhp over OEM spec. I also added a Mountune drop in washable air filter for good measure at the same time.
I would definitely recommend to anyone who's not wishing to void any manufacturer's warranty as the TDI system leaves no digital footprint once removed.
I love what it has done to both cars!
Great service and product
Great service and product. Arrived on time and was really easy to fit as per the instructions. It really does make a difference to the car and feel.
Had a problem with tdi tuning box but…
Had a problem with tdi tuning box but communications were very good and problem sorted out very quickly. Excellent service couldn’t get any better. Tuning box perfect.
Very helpful information
Very helpful information as I am not a machanic and I was given great advice. Thanks guys and girls KEEP UP THE GREAT WORK..
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