Not to sound like a jerk, but you really need to seach before posting.1) You need to tune your ECU, an SAFC won't be enough. You can go with a Rom-Tune like Enthalpy or JWT. You could also go the Apexi PowerFC (PFC) route.2) Stock internals would be fine, you may want to think about some Rocker Arm Stoppers. Some cams and valvesprings would really help the turbo breathe but aren't necessary.chestersnet wrote:i have a red top sr20detlooking to run a gt2871r, 550cc, z32
i am planing to runa a apexi safc iido i need to tune my stock ecu or can i run my system with just a safc?
can i run stock internals.... if so how much boost