If you have a light flywheel, and say it didn't do shit but a little bit, either it's not light enough or you don't know what you're talking about. I noticed a HUGE difference between stock and my 7.5lb, and so did everyone else I know that has one.
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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