Originally Posted by 00CivicSleeper
alright... its really starting to bug me. i have an apexi n1 catback, it has a resonator. before, it was a nice deep growl, not too loud until i really hit it. now, its loud no matter what. and it has a BUZZING sound to it. i really hate that. is there anything i can do to get it back to that deep growl other than putting my stock header back on?
Check for exhaust leaks... make sure all donuts and gaskets are properly installed.