hello guys...i want an advice for my next mod on my evo iv..
my engine is 2.0l built,hks head gasket 1.2mm,gt3076 a/r63,t3 manifold with external wastegate,intercooler kit,hks injectors 1000cc,hks fuel rail,walbro 255 pump,hks evc,and power fc..
also i have a boomba throttle body but i dont put it in my engine,,what is next? i want to take s2 cams but i dont want to open again my engine..if i put s1 cams with hks pulleys,how much hp i will get?
or to take a ported manifold and put it with my 75mm throttle body?
thank you...