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

Purchased a tuning box for my ford ranger, what a difference! Very happy with the product and service, only took 3 days to arrive in Australia

Good overall experience with TDI Tuning. They acted quickly to resolve a lost parcel and made sure I got my replacement box without delay. The product works well and I’m happy with it. The only slight let-down was no help offered with fitting or a goodwill gesture, which would have been a nice touch. Still, professional service and quick resolution in the end.

Fast friendly service from everyone involved. As yet to notice a fuel economy increase. But certainly a monster increase on power.

Thanks to Tdi Tuning for fitting my tuning box today, to say it has transformed the vehicle is an understatement, the tech was great and talked me through the box etc. really is a great bit of kit. It has taken away all the lag when pulling away and as for overtaking its a breeze and its only on setting 4. My MPG has already improved so im very pleased. Once again thank you.

Superb product, really helpful in terms of explaining the benefits and effects of everything and giving advice for future mods on car! Honestly amazing!

Fast and efficient service

Purchased a tuning box for my sluggish Jag xe 2.0d...I got it for the potential performance enhancement so went straight to top tune and I was not disappointed. Throttle response is so much better and lag reduced...feels almost like a petrol at times. Really happy I took the plunge. Easy to fit too.

I can't recommend TDI Tuning highly enough! Once again, their service and products have been exceptional. I've had their tuning solutions installed on three of my vehicles, and I’ve never had a single issue. Most recently, I visited their workshop in Chelmsford, Essex, to get some tuning done on my brand new BMW X7. As always, the experience was flawless, and the results speak for themselves. TDI Tuning has also provided units for my previous BMW and my wife’s Mini Cooper S, and I’m impressed with the noticeable performance improvements in all of them. The tune on the Mini Cooper S, in particular, was super easy to install—so minimal effort was needed, and the difference is night and day. I’ve always trusted TDI Tuning for their expertise, and their service has been nothing short of outstanding. The performance gains are real, and I’ve never encountered any issues with any of the vehicles that have been tuned. If you're looking to enhance your vehicle’s performance with reliable and top-quality tuning, TDI Tuning is the way to go! Worth noting if you ever do have issues and it's a self install, more than likely you've installed the wiring harness incorrectly. Just give the support team a call and they will get to the bottom of your issue and have it working in no time. I spoke with one of thier technical staff in detail when I was there and he clearly knew his stuff.

Very clever guy he knows his stuff

Brilliant place. Free fitting on a tuning box to our afford Ranger. Friendly, fast, and efficient!

Bought a Bluetooth kit for my civic from TDI Tuning, had a hiccup on their end with the harness. Had to send back, but not a worry, the entire process had full communication and quick response. The kit came back and was easy to install, and works a charm. Get a huge noticeable difference in performance. Amazing customer service and product.

I asked a few questions before buying, they were answered swiftly and with great detail. I ordered the tuning box for my Cupra Formentor and fitted it with ease. Up and running in 10 mins. The instructions were very easy to follow. The car performs well without the box, with the box it is wow!

Very good product. I have used a couple on different cars petrol and diesel

Slightly awkward to connect the leads to my engine, but once connected up it was very easy to setup and a stunning difference once up and running. Very happy overall

A little disappointed to be honest, impossible for a diyer with biceps to install so a 140 mile round trip to fit, first unit kept making the van not start, they upgraded the unit at my return postage cost. I did receive the upgraded replacement unit quickly but now I can't go above setting 3 otherwise the engine check light comes on and dangerously I get about 10% power, not good down a dark road, with traffic, approaching a hill! I was advised not to use settings 4-7 and it'll be okay, I paid for power, not a mediocre gain. Disappointed, was offered a new download but they would have just spread the maps out with no gains! If it's just a fuel pressure map I'd avoid, a map to adjust the boost for it.....maybe.

Such a fast service from initial order to delivery! Box installed in 10 minutes (after finding a T27 torx bit). Perfect instructions, easy to follow. Once fitted I did my commute home on setting 4 as its bang on 20 miles…. Then set the box to 7 and put my foot down, such a difference to standard! Thanks TDI Tuning! Fyi Leon mk3 2.0 TDI 184ps standard.