Just installed cat pipe, muffler rattle?
Originally Posted by ghostrider
My solution to the ricey sound (installed at the time: RPW header+downpipe, rrm testpipe, rmr axleback) was to change all my piping to 2.5". The RPW header+downpipe is already 2.5" and I got a custom 2.5" testpipe done as well as a 2.5" catback. My exhaust is still a little on the high pitched side, but it's nowhere near as high pitched as when I had a lot of 2.25" piping.
The test pipe rattling is because you have an exhaust leak. Try look underneath your car while you rev the engine. You should see a little water dripping out from in between the cat and catback. can't really do anything about it. Do not try and overtighten the bolts!!! You might wanna try getting new gaskets and tightening the bolts to the torque specs.
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