For a couple months I've had this horrible rattling noise coming from my exhaust. I finally got a chance to look under my car and its coming from where the header meets the cat. I took the bolts off. I'm not sure what is rattling because the bolts were really tight so i'm going to replace the bolts and see what happens. First of all, what is the point of the springs that go with the bolts? Also, can I replace them with regular bolts w/o springs?
Heres a pic.