The PE on my wife's 128i was muffler-only; completely axle-back. If that for the 328i includes a mid-pipe, my mistake for not realizing that. All that said, we have no drone in the 128i convertible with a PE, and I would not think it normal in a properly-installed 328 system as well.
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2015 F80 ///M3 Sedan 7DCT Tanzanite, 2022 X3 sDrive30i 8AT Brooklyn Grey
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