Hey. When I first bought my GTI, i was sure I would chip it. I wanted to wait to put a few miles on it before I decided to make the investment. I am ready! I was talking with a friend, & he said I should just use a manual boost controller. I could build one myself for very cheap, or make the cheap investment of US$100-200 for one. He explained that I couldn't get caught and lose the warranty by doing it this way. I can just remove it whenever I need to take it in. Please help and let me know if a manual boost controller & turbo gauge is a good thing, or should I just get an apr chip if I am worried about the warranyt?