Hi guys my first post. - ZR-1 Net Registry Forums

ernbuild · 06-20-2007

I have a91 ZR1, and ran 13.3 seconds at willowbank raceway here in australia at easter.[car stock standard] Am just having made a set of tuned length long tube headers[1 3/4" pipes], straight pipes are around 20" long and no cats and feeding into twin 3" pipes thru to the back end. What sort of power increase could i expect, and should I push some more air up around the motor if possible. By the way am running 335 tyres on the rear without any rubbing inside or out.
Cheers from down under Ernie.

06-20-2007	#1
ernbuild Join Date: Jun 2007 Location: australia Posts: 45	Hi guys my first post. I have a91 ZR1, and ran 13.3 seconds at willowbank raceway here in australia at easter.[car stock standard] Am just having made a set of tuned length long tube headers[1 3/4" pipes], straight pipes are around 20" long and no cats and feeding into twin 3" pipes thru to the back end. What sort of power increase could i expect, and should I push some more air up around the motor if possible. By the way am running 335 tyres on the rear without any rubbing inside or out. Cheers from down under Ernie.