if you have a S14 SR20, wouldn't this be a question for the SR20 forum?...just sayingpauliedrft wrote:so then its a myth that the stoch head starts to lift off @ 18psi with a stock hg and studs ????? i want to know cause i want to run 17psi or more boost with my new tune but i was going to keep it at 14-15 psi to be safe ???? i have a s14 sr20det