external waste gates are ran so the boost will spike to a higher psi (meaning more hp). turning on youre premium fuel switch usually goes hand and hand with external waste gates. the premium fuel switch retards timing to maximize boost spike pressure
You may remember my last post about a set of heads i had casting D50E. Anyways I found these new ones that i think came off a 351, casting D00E, are these heads any better or did i just find some more boat anchors?