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2015 525D Luxury Touring Whistle

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PaulM View Drop Down
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    Posted: 15 Sep 2017 at 11:30am
I have recently replaced my 2013 520D Luxury Touring with a 2015 525D Luxury Touring.  I am enjoying the added power, and all is well with one exception.  The 525 has a persistent low pitch whistle at anything over about 15mph.  My local dealer (Chandlers of Hailsham) has investigated and suggested that the only relevant difference between the 2 cars is that the the 525 has 2 air scoops cut out of the front under tray, presumably to increase air flow for the bi-turbo.  Does anyone have a similar experience?  Any other ideas?
PaulM
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Roger123 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Roger123 Quote  Post ReplyReply Direct Link To This Post Posted: 15 Sep 2017 at 8:21pm
No idea Paul... 

Depending upon how loud the whistle is, could a pedestrian close to the car hear it as you drive past at 15mph.  They might get a sense of where it's emanating. 

Also, could you very temporarily blank those scoops off and just drive it briefly down the road?  I'm sure a very brief cover up won't do any harm.
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