strange exhaust knocks...

[JDM_VTIR]

Hey guys,

I'm hoping someone could help me with a minor issue with my exhaust. At least I think it's my exhaust. So I just recently installed an OEM ITR muffler on my integra...nice and quiet. The thing is, there's a unusual knocking sound when I'm going over bumps as if the muffler is hitting the frame.

Keep it mind that I went back to the exhaust shop and inspected it out myself to see if anything was contacting. I even shook the exhaust to see if there was any chance of contact. Nothing still.

The bumper isn't hitting the exhaust. Everything in my boot is secured. I'm clueless to what it might be. It's not my coil-overs.

The knocking was only noticeable once I installed the ITR muffler. I know it's a larger muffler than my original spoon exhaust but there aren't any scratches on the muffler at all indicating it may be contacting the ground.

Any suggestions?

[nikolaz01]

Hey dude, check your cat it could be rubbing.

[white_ep3_civic]

It could b the muffler hitting the chassis

[V73C]

Check your B pipe that goes over your rear control arms. That could be touching the rear control arm. Won't be the muffler at all.

[googed]

agreed check your b-pipe.

could be hitting to the rear LCA

[FDBenni]

yup, probably hitting the LCA going over bumps, probably need to reweld the pipe.

[V73C]

Or maybe just newer or solid Hangers to stop it moving.

[JDM_VTIR]

hummm. like i said, i've already inspected the exhaust out for myself and nothing is touching at all. me and the exhaust fitter agreed that the piping had enough clearance to avoid any sort of contact. i guess i'll need to check again...

[V73C]

Yeah i know what you mean, but maybe the rubber hangers on the exhaust get a bit soft from the heat and your zorst sways over bumps and make the knocking sound.