Originally Posted by evolution
It's not that bad, at least to me. Just a big higher, 500rpm or so...you'll be at 4500k-ish instead of 4000. I find the droning worse with the top down.
h:
Yeah...from what I heard, 70mph with the 4.57's puts you at about 4250 rpm in an AP1. It might get a little loud with aftermarket exhaust, but I figure it should keep you from getting speeding tickets on the freeway. :rick:
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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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