Exhaust
 

WEll i got the exhaust done sounds good i feel a bit of difference but everytime i rev it up in park or N the cat rattles.... time for a new one or just get it fixed? what might be wrong with it? the sounds seems to disappear when i'm driving...

just get it fixed. i think it is the shield that is rattling in your car, not the cat

its your heat shield... rip it off you dont need it... i took mine off... oh wait,.... i dont have a cat..;)

got it fixed ... there was something inside rattling he put a resonator (??) on there... sounds good