Originally Posted by J-Rod

Good flowing heads don't care if they are N/A or F/I. Boost is a measurement of restriction. A better flowing head will make power at a lower boost level than a restrictive set of heads. Yes, a power adder is a crutch, but it is not a cure to poor flowing heads.

In fact power gains will be higher with better heads on an F/I setup than a N/A setup.