2010 2011 BMW 5 Series Forum F10 - View Single Post

philipm785 · 09-05-2019, 12:55 PM

A whistle under acceleration might be related to the turbo? In some turbo engines (not generally in the N55) you can hear an audible whistle as the turbo spools up.

09-05-2019, 12:55 PM	#3
philipm785 Second Lieutenant 81 Rep 247 Posts Drives: 2016 550i Join Date: Jul 2015 Location: Atlanta, GA iTrader: (0)	A whistle under acceleration might be related to the turbo? In some turbo engines (not generally in the N55) you can hear an audible whistle as the turbo spools up.
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