Thread: 2002 Grand Prix GT N/A Build

Originally Posted by Grimsin

mufflers wont increase hp.

otherwise you can add a zpp powerlog and HV3 insert to that list.
or just skip the powerlog and downpipe and get sd headers like I did for the same price if not cheaper the power log and dowpipe

Thanks i never thought of a powerlog and hv3 insert. Im going to do the hv3 for sure! I know mufflers wont increase hp much if at all but i still want to make my car sound nice.