That's kind of cool! It has to be something with either the airbox and/or wastegates. I would try without airfilter and see if that makes a difference - if it doesn't make a difference then I think you might have an issue with the turbo.
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2011 1M, Black loaded sans sat radio
2021 911 C4S Gentian Blue, manual
2023 X3 M40i - loaded sans Park Assist
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