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.

Really impressed with racechip from… Really impressed with racechip from shipping to packaging to installation all seamless and quick. Racechip has done exactly what they said it would do, and nothing less. Very happy over all with the product! This is by no means a full ecu tune, but it does exactly what it’s suppose and makes for a more enjoyable/fun ride.

Great product! Lighting fast shipping, and it was going international. Straight forward instructions made the job fast. Once installed, wow, instant power difference. Makes spirited driving a blast, totally changed the experience. 2018 BMW X1, worth every penny in my opinion. I would recommend not using the “race” setting at full power all the time as I’m sure the stock components can’t handle it lol, but when you want to have some fun, the option is there.

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!!