Just found this when taking a ride earlier today. The car was pretty loud around 2000 rpms, the noise was coming from the muffler area. I have a bad gasket and it's leaking air just before the muffler. Just a new gasket sounds like it could be a cheap fix but is it really? Anybody did this by themselves?
Also people who have a Hidden Hitch or something similar, how much clearance do you appear to have between the hitch bar and the top of the exhaust pipe? I think mine is pretty damn close and it could've banged on it on startup, causing the gasket to chip away like it did...
EDIT : It WAS the hitch banging on the muffler on startup. I'm gonna have to get it grinded a bit or something, took it off in the meantime.