Originally Posted by E90_boostjunky
i just had my car in to get turbos inspected i also have jb+ talked to the mechanic hes my buddy, and he said unless they can prove that that caused the problem they cant void ur warranty. as for ur other questions idk. GL
Failing turbos is a common problem on 335, JB+ would sure void all your warranty since turbos are running at higher boost.
Don't need bypass, do need scan tool just in case. Easy to use too. Buy from Burger or directly from people who make it.