MaxRPM installed a stage 3 Cobb system in my 2017 GTI, I love the quality work they did on my car, and all the information they explained to me after it was completed. Their customer service is remarkable, they make you feel like you are family. Just had my oil change completed, and a diagnostic check on the Cobb system. The only thing I have to do is learn to smash the gas a lot more to get the full potential out of the car :-)