I own a 328ci, and the only non stock part of the exhaust is the muffler. I am finding some severe rattling noises coming from the two resonators. I came across the supersprint section 1 and 2 straight pipes and I am considering putting them in place of the resonators. My main questions are...
See my thread in the main FS section. I'm posting it here as well because I'd rather sell it locally to avoid shipping it. Thanks in advance!