I have an 02 Z28 with a Borla catback system. It was on the car when I got it. When starting off from a standstill or going really slow in reverse, it makes this nasty banging noise. Brought it to the dealership and they said they couldn't do anything as they don't own a rosebud welder ( w/e that is ), but also couldn't figure out for sure what it was ( they guessed ). Anyone else have a banging catback??

 

Might wanna try this out in the Gen III forums...