Well executed Grabbed base S for 2019 Civic 1.5T to smooth out low end throttle response. Arrived promptly, well packaged, easy install. Immediately addressed issue at default (3) setting. After a few weeks noticed small but consistent mileage improvement (6-8%); wasn't expecting that. Tried upper two settings; ultimately settled on 4 which offers some nice scoot in the RPM range I prefer. Would purchase again without hesitation.

Thanks for saving my AMG CLA-45 Mercedes! I have an AMG CLA-45 Mercedes that had horrible turbo lag (I live in California, the worst state for cars in the USA due to strict pollution laws). I purchased the middle RaceChip device with BlueTooth and it completely transformed this from a frustrating car with horrible turbo lag to one of the most fun cars I have ever owned. The selectable tuning is awesome, I have tried several settings over the last few months and they all work great. I highly recommend RaceChip, this product is everything they promised.

great hardware and outstanding customer service First I want to say that this chip really works, it makes my car more responsive and eager. After about 4 months I had an issue with the Bluetooth so RaceChip sent me a return label so I could send it back to them to get it checked out. 5 days later I had a new chip in my hands, and that included shipping from the US to Germany and back! So not only it’s a great chip, they also stand behind their product and take care of any question or problem you might encounter promptly. Truly a 5star company and product.

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!

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!!