Improvements across the board! I can honestly say that I got both an increase in power AND improved mileage so far! The installation was pretty simple but, finding a spot to mount the unit (away from heat) is tough in a small car. There is still periodic disconnection with my phone app but, all in all my experience has been positive! I'd do it again!

The chip is fabulous The chip is fabulous, it works. I've only had one problem and it was not with the chip, it was with the app and it was caused by me, since I changed my phone. Of course, the chip and the phone had to be paired again, as I am not an expert the pairing took me a couple of weeks, but with the help of Patric Richardson from the RaceChip Customer Service, I was able to solve it finally. I have no hesitation in recommending this German company.

Ordered GTS Black Ordered GTS Black, instructions were very clear and easy to read, installation was simple, and everything worked as advertised! Customer service was also super helpful and quick to answer/respond to questions and glad to assist. Highly recommend!!

I would not recommend RaceChip I would not recommend RaceChip. I bought it tried it and it did nothing good. The Technical support was rude, aggressive and ultimately useless- Your coils are bad you need new plugs. I sent it back for a refund - it didn't do anything and nobody was surprised - especially not their Returns Department. They must get a lot of practice to be so good at it. I don't believe that these "Chips" do anything apart from have a light and a funny little screwdriver

Amazing results!! Amazing results!!! 2017 Cayenne Turbo (500hp) Installed both the RACECHIP and throttle controller. Big difference. Better than I expected! The car is a lot different. Now 580hp but actually feels twice as fast and twice as responsive... Much more fun to drive! Thanks! Charles, CorpAuto