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I haven't seen any conclusive results, but things like atmospheric conditions can sometimes make a 10th or two's worth of difference one way or the other. That, and getting the drivetrain "broken in", so to speak, plus whether you're running 91 or 93 octane.
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2015 F80 ///M3 Sedan 7DCT Tanzanite, 2022 X3 sDrive30i 8AT Brooklyn Grey |