Well where do I start Ordered on Friday (yesterday). Arrived today & fitted in 15 minutes. Went for a little drive & what a difference it’s made & only on number 4 setting. Fantastic .

Made a huge difference to our 130bhp Ducato based motorhome, we had it fitted for a trip through France and Spain and were over the moon with it. We recently switched to a Ford Transit based motorhome and unfortunately the Tuning box can’t be converted between the 2 so let it go with the old motorhome and have just placed an order for a new box to fit the Transit. Looking forward to the extra power again now, especially as we tow a small car on an A-frame on most trips.

Exceptional service from Mason. Had a box reprogrammed for another car. Mason explained everything and I sent him my box. Within a few days it was back and this morning I installed with the new cables and instructions. Fantastic service. Looking forward to playing with the maps once everything has settled in.

Hi, self installed TDI Tuning kit on my 2018 Fiat Ducato 2.3 multiple. A bit tricky to get all the clips on due to very little space the getting my hands around the engine, but with patience the plug and play system was straight forward. The system connect to the blue tooth app without issue. First impressions on the test drive absolutely great, instant improvement on smoother drive and more power. Fantastic product well worth installing.

I purchased my current CDT4 petrol tuning box for my AMG43 6 years ago running at max 7 setting which gave me increased power and improved mpg, unfortunately a couple of months ago it developed a miss fire so I contacted tdi tuning who suggested I return the box for examination. Within 24 hrs the box was returned to me and they had installed updated software and done a system reflash at no cost to me, the box is now back on my vehicle On max 7 setting and I noticed immediately smother delivery of even more power and better mpg. I have no hesitation in recommending this company both for it's outstanding customer service and amazing product. Mr G J Almond.

Super helpful Excellent service Will recommend to all my friends

I've asked lots of questions and had rapid fully explained answers and subsequently ordered two tuning boxes for myself and wife's car. I tried to fit myself but due to lack of pressure with my thumbs I've booked both cars to be fitted in their workshop. So far very pleased with the service provided and I will update the review after fitting and running both vehicles for a while Thanks guy's Since having the boxes fitted me and the wife have both noticed improved mpg more power and both cars run smoother and pull more Thanks again everyone for all your help and support

Very impressed with TDI Tuning, fast delivery and great customer service to solve any potential issues, only had the box fitted one day but wow my 128ti pulls so much better, it’s rapid across full rev range, 4th gear pulls how 3rd used to, not gone on any long enough journeys yet but sure in eco pro I will see an increase in mpg due to great increase in torque. 5*

What a difference, 0-60 time is 1.5 seconds better than stock on my audi Q5 40 TDI.

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 tuning 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

I have had this for over 3 months now and can honestly say it’s amazing. I do sometimes find my car not always putting out the full power until I turn my car on again however I still recommend this product.

Customer service and fitting at their own workshop as a breeze. I had initially purchased the tuning box with a view to fitting it myself, but was unable to do due to temporary change in health. TDI Tuning was easy to contact over the phone and fitted the box at a time that suited me. Chip did a great job and explained how it worked and took me through the work that he did on the car. Well, for people who are wondering if it made a difference to the car - it did make a big difference both it terms of acceleration and fuel economy and a much smoother engine with no diesel turbo lag. I am very satisfied with TDI Tuning.

I originally purchased my TDI box for a Porsche around a year ago but due to reasons never had the chance to use it. I recently purchased a 2019 BMW 330e and contacted TDI with some questions I had about the reprogrmaming process so I could use the box on my new car. I purchased the reprogramming package on Feb 10th and received it today (Feb 11th). Their tech team answered all my queries within a few minutes of me contacting them. Installation itself was very simple. The provided instructions clearly showed which connectors I needed to unplug on my engine, and walked me through the install process. The provided instructions for reflashing my box from the app (possible with the Bluetooth versions) were again simple and I would say the entire process took between 15 and 20 minutes from opening the bonnet to driving off. The reason it took so long was mostly due to the clips on my connectors being a bit fiddly to undo. There's been a noticeable increase in power, so I'm very happy. I'm going to have to be careful with the loud pedal from now on! TL:DR; Excellent service, unbelievably quick dispatch and a happy customer.

We had ordered a tuning box for our 2007 Mitsubishi Fuso. The customer service at that point was adequate. Nothing exceptional. We received the product, but the plugs on the wiring harness didn’t fit our model. After about a dozen email exchanges, which almost resulted in the item being returned, we gave it a second shot by asking them to send a new harness with different plugs. The guys acted fast and FedEx shipped the part the following day (free of charge!). The best part of this is that the plugs fit and after the first test drive we can confirm that our Fuso got the boost it needed so badly! Hats off to the crew at TDi Tuning!

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.

Great company, booked in and had the box fitted, nice cafe 30 seconds away, all fitted and a good power gain. Highly recommended to all that want a bit more ‘go’ in their car. The team were also very friendly and called me when they said would, so more bonus points awarded! Many thanks. Can’t give six stars!

I recently bought a tdi tuning box for my Audi SQ5 after having used this product a few years ago on an Audi A3 with great results. Delivery was quick as expected. The harness was so easy to fit, it took less than 15 minutes. After starting the car for the first time a coil and engine management light came up on the dashboard. I gave the team a call for some help and the customer support was second to none. A technician had called me back within 10 minutes and talked me through potential issues and fixes. After following the advice and refitting the harness the problem was fixed, no more lights on the dashboard. Noticeable performance gains were there from the first drive, solid power right through the rev range and consistent improved efficiency of around 5-7miles mpg. Cannot rate this product and the team highly enough and would recommend they products to anyone. (Which I already have and two of my friends have theirs on order).

Wanted to play around with a stage 1 tune, but like all BMW's post 2020 - your ECU needs to be sent to FEMTO Evo in Helsinki! Minimum 2 weeks sitting in a shop to do a stage 1. Anyway - Purchased the tuning box for a BMW M235i gran coupe. 1) Instructions in kit are easy to follow. Saying that - you do need a few tools as you will have to remove the air intake ducting to reach one of the sensors. 3 bolts - just wiggles out and unclip from Air filter. You will also need to pop out the MAF and the top of the filter box as if you were putting in a new filter. (25 minutes and pretty straight forward even if you have never done anything on a car). 2) Follow instructions and install the unit. I used a flat head to pop the fasteners, tied the conduit tubing to the manifold and mounted the unit on the passenger side strut. (25 minutes). 3) Drive around on setting 4 for a while - then jack it up to 7. No warning lights - no issues. Results: Slightly faster take off, more burbles on start-up, but acceleration and power after 60km is amazing. You can really feel the power difference. I am very happy with the results - would recommend this product to anyone starting tuning and not ready to do your ECU and exhaust pipes. Power gains are there and by installing yourself makes it even better. Shipping to Australia took about a week. Also love that this product is English and TDI is a UK company - that is important to me as a consumer. 5 stars.

I recently bought a 1.6TDI Skoda which was a little underpowered to say the least and considered reprogramming an existing dual channel tuning box from TDI tuning in Chelmsford to match my new vehicle. I have to say my experience of dealing with this company was first rate, I packaged the existing CRDT4 model complete with wiring loom and sent directly to them via the website ordering process which was extremely easy. I sent the item in on a Friday and received the replacement the following Tuesday which was very surprising. It came boxed with easy to read instructions and the device was fitted and running in my car in about 10 minutes. I have left it at the factory settings, set at 4, which makes the car more throttle and turbo responsive and feels much safer pulling out at junctions, with an urgency to get up to desired speed far quicker and safer. Overall, a very positive experience which has breathed more life into my Skoda without unduly affecting the already great fuel economy whilst improving the whole driving experience and safety. Great value too if you already have an existing unit to upgrade to the new vehicle.

Extremley happy with the performance, pickup, powergains and fuel economy from my TDI Tuning box for my MB Vito, getting an extra 150km per tank city driving, a BIG THANK YOU to TDI for Excellent Customer Service and Product, Highly Recommend this product/ Company