Surely a ported and flowed head won't increase boost, it'll smooth the air's path but if you running say 21psi and fueling for 21psi then surely it'll remain the same?

Surely porting and flowing the head only becomes an advantage when it can't flow the air that your trying to force through it!?

Also i can't see how cam's can affect the boost pressure that you can run either, but they affect power by managing the air flow in and out of the engine?

Surely the determening factors to the boost pressure you can rum are weather the head/exh/inlet/turbo can handle it and also wether you can fuel correctly for it and mainain sensible ACT's?

PJay