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SAFC has its place. It can be very useful in small increments for lightly modded motors.
It is practically an essential component of effectively using a rom tune.
I recommend Apexi PFC + Z32 maf for 310-500hp sr20, larger than factory turbo situations
but if it still has the OEM s15 turbo on it, set to 12-13.5psi manifold pressure and use the factory ecu/maf/injectors and leave it alone until it gets a larger turbo
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