I have an evo 2 axle back on apexi N1 cat back and the damn thing makes a really annoying buzz out of the exhaust. Im not talking about when you get on it, it makes this sound at idle and it sounds like maybe something inside of the can, maybe the baffling is loose. Its not really a rattle though it sounds like a grocery bag is stuck in there or something. Anyone with evo 2 who has seen or heard of this problem give me any possible suggestions to fix it.

 

My car did that and the exhaust was rattling against the heat shield. I just bent it out of the way.

 

could be an exhast leak, or the fiberglass baffle insulation.

 

it sounds similar to a leak but it comes from the muffler thats what i dont understand, maybe the exhaust just sounds shitty