If you're running zex, you'll be fine without any other fuel mods. I ran a 75 shot at stock fuel pressure, with intake and exhaust....never once ran lean. It regulates the fuel pressure according to bottle pressure, so you always get a good a/f mixture.
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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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