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      02-17-2020, 11:18 AM   #67
M powa
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Drives: 2014 435xi
Join Date: Sep 2015
Location: BC

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i must be getting old lol, wasnt expecting such drone. Was thinking pure exhaust sound. At least thats what happened on the 435 when i kept the flap on

in the city its not too bad, however once u hit the freeway.....
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      02-18-2020, 03:35 PM   #68
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Drives: G05 X5 M-Sport 40i
Join Date: Apr 2013
Location: UK

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I noticed the drone too, it doesn’t sound sporty to me, more like an old banger with a hole in its exhaust! So for that reason I don’t much bother to use BimmerLink to open the flap now.

What I’ve noticed recently is that in Sport+ I think the valve is open at lower RPM than 4K. In an underground garage I park in I hear a lot more exhaust sounds with the drivers window down when in Sport+ over just Sport and this is at low engine RPM and sub 15mph speeds
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