Quote Originally Posted by snYpz View Post
I got my cat and topspeed header installed today and also got the flex pipe replaced.
There is this annoying "rattle-like" sound when i accelerate hard. It kinda sounds like a leaf is trapped and rattling.

Is that normal? It doesnt sound like its a whistling sound at all. The guy at the exhaust shop told me its because there is increased flow to the stock catback which is what causes the sound. Is that true, or was there something wrong with the install?\

BTW. when not in "D", reving the engine produces no rattling sound...im confused :s
No idea. I'll let you know what mine sounds like when I install it. Maybe you should record a video so that we can hear your sound.