Stage 2 on a 550i GT Sound?
Hey guys. I wanna get a DINAN Stage 2 on my 550i GT (you can see it in the photos and media forum). It's currently stock and there isn't enough growl to it. Does the DINAN add any more noise. And if not, can I get BMW or DINAN to open up the flaps (or muffler delete) to make it louder. My wife gets scared that I would void the warranty if I or a third-party did a muffler delete or anything else. Thanks!