Originally Posted by snailpoweredbrick
Assuming a performance cam is installed, doesn't the RPM's diving at higher rpm have a lot to do with the Intake manifold, throttle body size, exhaust manifold, turbo and head work? If you don't have the pervious parts I mentioned upgraded, I don't think it will matter that much how big of a cam you put in, the engine acts as a restriction.
This is a question, I'm just curious.
My intake manifold is stock, but exhaust manifold and so on are not. I run big manifold pipes for topend, and 4" exhaust all the way back, paired on a 76mm turbo. I find that the plenum intakes look to race to use in a daily car.