The 323i Headers is on, all 4 cats have been removed, car feels and revs so much better. I just hate that tin noise, i have replaced with straight piping, i will be going in to add on 2 small boxes and then it will be 100s...
I recommend this to e46 boys... Its worth it, if you dont want to go with BMW headers, go with aftermarket...
Shot Gizmo for the advise...