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JSPERFORMANCE · 02-17-2008, 10:36 AM

I run spintech mufflers on my IROC, if you go by the math the car makes the same hp with the exhaust on as it does off.

02-17-2008, 10:36 AM	#14
JSPERFORMANCE NJFBOA Supporting Sponsor Join Date: Feb 2006 Location: HULMEVILLE, PA Posts: 2,023 iTrader: (4) Social Networks:	I run spintech mufflers on my IROC, if you go by the math the car makes the same hp with the exhaust on as it does off. __________________ JSSPEEDANDCUSTOM.COM