When you spin all of first gear to redline, you arent going very fast MPH wise....so when you shift to 2nd gear, your rpms might be at 6600 but you arent going fast enough for those rpms.....therefore they drop according to how fast you are going. Try not launch so high, or let your tires grab before jumping on the gas.
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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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