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Hi there!
I have the PPK and a PE. I didn't notice it being louder after the Installation of the PPK Software.
My flap is disconnected and it doesn't appear to be "to loud" at higher speeds! At 100 mph the wind noises get the upper hand anyway...
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BEFORE: 130i N52 (2006-2011) 
NOW: 335xi N55 (2011- )  |