Header, Intake, & Exhaust - need some help

hey guys heres the deal ! i have 99 si with a aem short ram intake. i just bought a magnaflow cat back exhaust system ! im im also going to get ceramic dc sport headers ! the prob is i have the air going out my engine bigger than going in ! im going to get a obx intake manifold would that be enough or should i get a aem fuel rail also ?? i dont know what i need to make them all have the right pressure and run perfect with max hp !! plz help !! what do i need to make this all work ??? thanks for your time guys

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well thats the age old question which ultimately leads to forced induction.
how can i get more air into my system, hmmm, all the usual answers still apply. throw it on, see how it runs, and start saving for your next mod, intake/header/exhaust, the car should run fine, better even, but if your looking for more air, then your leading to FI, which brings up the fuel issues also, do it, then plan your next step, it'll run great

I dont understand what u mean... bigger air going out than coming in??

sorry ! i ment more air going out ! cause of the header and 2.5 tubing with exhaust doesnt that mess up the pressure ?? dont i need to mod the inlet of air going into the engine to make the pressure right? doesnt the same amount of air that goes out my exhaust need to go into the engine ?

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