|
IIRC a resonator is in place to reduce drone when the cats are removed, so you wouldn't want to remove a resonator. That being said, Bimmer-Bob is correct in that for the 128i, we only get the muffler so there is no resonator in that. 135i's have a lot more options for their exhausts and I think we have few if any options for mid-pipes or the such as our stock exhaust is composed of one piece whereas the 135i exhaust is two pieces mid-pipes and muffler
|