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      10-14-2014, 04:30 AM   #6
Schullz51
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Drives: 2015 AY M3
Join Date: Aug 2014
Location: Pittsburgh

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Agree with it's either A.) Normal turbo noise which you said you aren't used to which I would describe as a lower pitched whooshing noise. or B.) A boost leak which I would describe as a higher pitched whistling noise.
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2015 F80 AY M3 - Delivered 11/19. DCT, Extended Black Leather, Adaptive Suspension, Black 19's.
"AY Brave"

2015 BMW M3 F80: 11.780 @ 118.670 MPH