VOltage drop from alternator to fuel pump, and fuel pressure drop from pump to rail won't cause anything....there's a reason the fuel pressure regulator is on the fuel rail. As for CAI and header, that won't cause a lean condition either. You won't need any added fuel until you get into cams, high compression, or forced induction.
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2015 Ford Mustang GT Fastback - Ingot Silver - 6M - Performance Package - Gibson Catback, JLT CAI, FR 47lb injectors, BAMA E85 tune, Eibach Sportline, BMR wheel hop kit, UPR oil separator, Steeda shifter bushing/bracket
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