Quote:
Originally Posted by npirnia
There's that word again - "should" :P
It is the same as pressing the exhaust button on the center console and it does change the exhaust sound a bit even in the default efficient mode. Probably not as loud as it would be in Sport (I haven't tried yet), but you can set the "M exhaust" on by default if you would like.
-Nick
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I shot the video. I heard the different note in Efficient INSIDE the car. Not outside:
https://g87.bimmerpost.com/forums/sh...php?p=30221671