Originally Posted by dP3NGU1N

I know this has been hashed and rehashed but just for arguments sake... I installed my ark exhaust and the exhaust was hitting the middle support structure. It would buzz when first starting up the car for about a minute and then go away. And then only buzz in the 2-3k rpm range from then on. The way I verified it was indeed the exhaust was by jacking the car up, getting underneath, and physically shaking the exhaust in several directions and it would make contact. So i loosesened the screws, used my floor jack to push up on the exhaust while I tightened the screws back down.

Humor us by shaking your exhaust while the car is off and you're underneath and confirm that it is indeed not the culprit. Because honestly from inside the car I SWORE that it was coming from inside because you can't hear it from outside - your car is an echo chamber.