The exhaust gasket between the two sections of pipe above the RLCA was totally fucking hashed and was making my car sound extra farty because of the subsequent leak. Well, tonight I installed a new gasket and tightened everything down real good and I was amazed. Not only because my Greddy PE now sounded like it should, but how much more responsive the low end was with the leak fixed. I dunno why I chose to share this with you guys. It just surprised me. I expected to just get rid of the raspy fart noise, which it did. But I never suspected that a tiny problem like a crusty flange gasket would kill that much low end response. Little things like that make me happy.