i been having this problem for a month now and i dont know what to do so i figured to ask question from you guys.
i installed a catback exhaust in my car and as for me i like big and loud exhaust.by the way its greddy the one i installed in my car.well everytime i drive my car around the exhaust vibrate so much that it affected something on my trunk and making that loud noise i thought it was my rear bumper so i took it out but it wasnt.this loud noise makes everytime it hit 2500 rpm.it sounded like two metal sheet touching together.anybody knows what is that????

 

its banging against your rear sway bar. greddy, i assume you have the evo, is known for doing that.
if you look at your bpipe, its more than likely resting on the bar.

 

just get the hangers adjusted

 

slow down i dont really know nothing much about acura so you gotta be little bit more specific.that noise its only makin when the engine get hot and been drivin it for a few minutes but from the time i start it till like about 5 minutes its good but then like after that its started to make that loud sound.

 

why does somone have to slow down warm your car up till it makes the sound get under your car and check the exhaust

 

it may be hitting your rear sway bar..

try www.clubrsx.com and ask or look for some info. you'll get your answer pretty quick there.

 

i already said that. but he thinks its something else.