Quote:
Originally Posted by Carnage_SS
Car made 475hp with cam , 1 7/8 headers , e85. Added the ported msd intake , roto fab , 2in headers and converter and now it out down 480 . What could be the reason ? Timing #28 a/f around 12.9/13.1 5th gear pull
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Port your intake and exhaust ports, that will get you there.