To give you guys an idea. When mine was on my 2002 GTS w/no cats, B&B catback, 70mm t.b.'s,3" smooth tubes,3" air box mod,filters,MSD plug wires,aluminum flywheel it put out:
Run #1 525 rwhp/ 550 rwtq
Run #2 526 rwhp/ 546 rwtq
The car had been sitting cold for hours and idled for about 5...