Most turbo motors are tuned rich for safety. If you have a good tuner, you can run closer to stoichiometric and make more power. Sometimes they are tuned TOO rich though...and that's no bueno. 12.5 = bueno
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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
Team B.O.B.® - Ballaz on a Budget