What kind of hp can I expect with stage 1's? I can't see myself needing much more than 400hp.The s366 flows more air than a d66. I choose it for the simple fact of customer service and the ability to go bigger! The turbo is awesome spools great clears up smoke no problem! Egts no big deal at all. As for boost I see 7psi cursing and a max of 40psi what else would you like to know?