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ins0mnia24 · 07-13-2008, 11:13 AM

I can't really see if your car is actually an SS or Z28 judging by the picture in your signature..
But if it is an actual SS and if you have the stainless steel SS muffler
That Muffler flows pretty dam good..
My buddy has a 2001 SS with QTP headers, QTP Y-pipe and a 224/224 cam with Patriot LS6 cylinder heads..
So we unhooked the Stock SS cat-back on the dyno so that it was basically just an open Y-pipe and he only ended up gaining 7hp and I think it was 5 ft lbs torque..
So we installed a Cut-out on the I-pipe for when he wanted the little gain and more noise..

07-13-2008, 11:13 AM	#3
ins0mnia24 Join Date: Aug 2005 Location: Millville & Little ferry New Jersey Posts: 454 iTrader: (2)	I can't really see if your car is actually an SS or Z28 judging by the picture in your signature.. But if it is an actual SS and if you have the stainless steel SS muffler That Muffler flows pretty dam good.. My buddy has a 2001 SS with QTP headers, QTP Y-pipe and a 224/224 cam with Patriot LS6 cylinder heads.. So we unhooked the Stock SS cat-back on the dyno so that it was basically just an open Y-pipe and he only ended up gaining 7hp and I think it was 5 ft lbs torque.. So we installed a Cut-out on the I-pipe for when he wanted the little gain and more noise.. __________________ 2002 Z/28 = Firemutt Racing 370 w/ Cam, Trick Flow heads, TPIS 90mm Intake & 90mm T.B., Vigilante 3600 t.c., Michael's Transmissions Built 4L60E. QTP Headers, Mufflex Stainless Y-pipe, Pypes Performance Exhaust, Moser 12-bolt w/ 33 spline axles,Truetrac & 3:73's., Spohn. Cartek Tuned... Last edited by ins0mnia24; 07-13-2008 at 11:41 AM.