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jonszr1 · 10-04-2007

alot of guys like 3in . i have a 21/2 in exhaust by spin tec witha dr gas xpipe and my car runs over 119 in the 1/4 the key i think is to get rid of the resonator . 3 in i think would be good if you were porting everything inc heads. one other thing is to get your car tuned after headers . corey henderson or mark haibeck would be who i would use. go easy on dad but race him from a 20mph roll and you will smoke him. zr1s are a really good roll car.

10-04-2007	#2
jonszr1 Join Date: Sep 2006 Location: lone pine and mammoth lakes Posts: 1,406	Re: Exhaust advice needed alot of guys like 3in . i have a 21/2 in exhaust by spin tec witha dr gas xpipe and my car runs over 119 in the 1/4 the key i think is to get rid of the resonator . 3 in i think would be good if you were porting everything inc heads. one other thing is to get your car tuned after headers . corey henderson or mark haibeck would be who i would use. go easy on dad but race him from a 20mph roll and you will smoke him. zr1s are a really good roll car.