I dont think 175 is anything to worry about. If one or two cylinders were quite lower than the rest, you'd have something to worry about...or if you were 140 or below. I still think the test should be redone with the car warmed up, and throttle plate open.
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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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