I have an CRX Si Intake manifold and i just bought a 92' D16Z6 motor and I was wondering if my inake manifold would fit on it. Or is the Z6 one better then the Si. I know the Si one would be easier to hook up.

 

I've been wondering about the same thing! I have a a6, z6, and y8 intake manis (they will all fit BTW) just can't decide which one will give the best results. a6 mani has the shortest runners, which are slightly smaller diameter. z6 has longer runners and wider but the smaller "cigar style" plenum. y8 has the same runners as the z6 but the fatter "type-R like" plenum. Anybody have any dyno numbers as to which intake is better. I'd sure like to know. Everyone says the y8 is the best one to use, but wouldn't the a6 one be better for top-end since the runners are slightly shorter?