could be the heat shield coming loose on the cat? the exhaust rattled on my firebird back in highschool, the honeycomb inside had busted up, so I just hollowed that ish out haha.
Sounds like something is too near something else, so get under there and check it out!Yea I need to get under and look. The heat shield seems too thin for it to be that loud when I hear the knocking inside the cabin. Maybe I can get something rubber and put it on whatever the exhaust is rattling. It's embarrassing when I'm near some hot chicks and they are checking out my sweet XB and then hear KNOCK KNOCK KNOCK!