Okay i have this really annoying problem. i put a tsudo exhaust on my car and ever since then ive had a problem with the mid piping rubbing up against things under my car.
Examples:
When i first got it i still had the stock header, and it was rubbing on my shift link. so i cut some of the exhaust hanger, and it vibrated less but still rubbed on it well enough that it made this annoying rattling sound. Then i about a month of that i bought a DC 4-1 header and a high flow cat. and now its rubbing against my rear lower tie bar. i've had enough of the rattle and have been to a couple of places, but no one has been able to completely dissipate the noise.

Please any one help me!!!!!!