So let me get this straight, I've searched the entire site, and still no clear answer. 570hp the max power on 92 octane fuel? Live in Hawaii, and don't think there are many places here that holds race fuel. Also don't want to look stupid, and buy a big ass turbo for nothing. Didn't get any replies on the FAQ Section.

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I've searched the entire site, and still no clear answer.

thats because there is no definate clear answer it all depends on tuning, engine and parts condition, turbo sizing, etc. to give you an idea of what you can do with pump gas, the current record for whp on pump gas is roughly 650whp. this was done with careful tuning, twin hks turbos, and 93 octane gas.

I'd say octance rating limits you on the boost, not the whp you can produce. So whatever power you can squeeze out of 18-20psi I guess is the limit.

juaneeeto, let's end this once and for all. It looks like you are a rookie since you are asking these questions. Because of this, I doubt you will accomplish anything over 550whp on pump gas with a large turbo (70mm+). 550 is plenty of power for the street. Out.