Great service, tune box works well

BMW 420D MSPORT COUPE Easy installation (around 15 minutes), no errors or warning lights. Power is consistent through every gear and I am experiencing around 3mpg fuel efficiency on the highest setting. Definitely recommend the tuning box.

Very happy !!! had a box on for a month now, on my ford focus ST250 . No issues at all ..very noticable power increase . I would recommend you get one asap . Also I've noticed better mpg on setting 1 .

Recently installed a TDI-Tuning box on my Audi A4 2.0 TDI 190ps quattro. Easy to order, prompt delivery and really impressed with the quality and feel. This kit includes connections to three engine sensors for this engine; fuel, boost and cam. The hardest bit about the installation was un-clipping the original sensor connectors, especially on the fuel rail. Otherwise quick and easy. I did have one issue in that it's possible to fit the loom connector on the cam sensor back to front...and I did. The engine stuttered on start and it gave me a auto stop/start error on the dash. The car however ran really well on the out of the box setting 4. A quick email to TDI resolved this, via a prompt and detailed response from Jake, once I'd correctly fitted this one connection (out of 6). The bluetooth app is quick and easy to connect, and use. Not loads of functions but useful to have when you're building up from '4' to '7' as I have....allowing ten minutes between each. Super impressed with the improvements to the car. Much smoother with noticeable power improvement. MPG is maintained when you push the car, and improves if you take it steady. Highly recommended all round, especially customer service. A***

Turbo kicks in earlier and provides much more pull which is exactly what I needed.

Just installed it. A bit difficult on a 3.0L Jag due to the engine bay. On Setting 4 I noticed a nice improvement in part throttle boost resulting in better mileage. Took it up to Setting 5 and noticed the boost came in about 500 rpm lower in the revs. Gonna give it a week on each setting before going to the track on Setting 7 to measure 0-60 times, 1/4 mile, lap times, etc. but I can already feel it in the seat of my pants. That’s where it really counts right? Really like the customer service; the guys have been great to work with, even with an American redneck like myself. Thanks for the help and the fun everyone. Really enjoying the tuner.

Love the product. Bought it for my Astra & a year later I changed cars. Within a few days it was reprogrammed & back in the car. The turn around was 3 days once TDI recieved. Just Royal Mail I used took 4 days to deliver it to them. Not TDI's fault though. My 170ps Insignia now goes like a rocket. On a 500 mile trip it returned a crazy 67mpg at 70mph. Even around town I have seen a 4mpg improvement.

Great tuning box!

Good product, easy to install. Can feel increasing of power strait away. Very happy with it

Dragy shows almost 0.5 of a second of my 0-60 (4 seconds dead) Seat Cupra ST.

Saw an immediate gain in power which I wasn't expecting, reduction in turbo-lag and improved throttle response. Very happy.