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Xdrive35i2014 · 05-02-2018, 12:43 PM

Intake noise? U are running a tune so maybe during acceleration, the engine is sucking up more than before hence the whistle noise?

It might be easier if u capture the noise in a video.

05-02-2018, 12:43 PM	#4
Xdrive35i2014 Second Lieutenant 57 Rep 254 Posts Drives: X1 35I Join Date: May 2016 Location: Canada iTrader: (0)	Intake noise? U are running a tune so maybe during acceleration, the engine is sucking up more than before hence the whistle noise? It might be easier if u capture the noise in a video.
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