Quote:
Originally Posted by RedRez86
Okay I will not be doing any internals at all. Only injectors and fuel pump would be only other things I might do to add some HP. I Definitely don’t want to mess with internals. Well I don’t want it “quiet” I want it to roar and growl just not be stoned out or so loud I can’t hear myself think inside the care and waking neighbors lol. Maybe Perrin 2.5 catless?
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Injectors and fuel pump are unnecessary if you're only planning on using pump gas. They will not net you any more power. The limitation will be the high compression of the engine combined with boost causing knock... which is why many people lower compression when building the bottom end of the fa20 or go with e85 which has a higher knock resistance than 93 or 92 octane.