machinehead

I was wondering how bennificial port matching the intake is. I was thinking about it and it seems that most people, including myself are running around on ported motors but the intakes are not. This seems kind of stupid and i would think also will negate some of the potential gains from the engine porting. Am I correct, or am I not thinking clearly? How can the engine take in more air if the hole that its coming through is still the same size?

rotarygod

iTrader: (1)

Which generation do you have? If it is a 2nd gen. then you have a restrictive afm in the way anyways. On my custom built intake manifold for my 2nd gen turbo, I ported the lower one right at the gasket between it and the upper. I made the holes going into the lower slightly larger than those of the top manifold to help reduce reversion. I'm not sure how much it helps though since I did it at the same time I built the new motor.