Hey guys. Ever since I installed the comptech header and random tech hi flow cat, I can hear the exhaust system vibrating or rattling at random times. I have the stock cat back though. I was wondering if anyone came into similar problems after they installed the header and hi flow cat? Does anyone know if this can be fixed or is it a byproduct of the aftermarket exhaust? Thanks.

 

Same problem here, only when AC is on and idle/parked.

 

Same here check your hangers for all the parts under, also if it is a loud rattle like banging sounds check that the sway bar and exhaust aren't hitting.