Thread: First BMW M4 GTS dyno = 492hp at crank
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      06-10-2016, 12:50 PM   #17
DavidGP
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Drives: 2016 MG F80 6spd
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Dont think it was an upshift. Sounded more like a Brrrrraaap "fart" the F8x are notorious for. I could be wrong.
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