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      12-06-2021, 02:58 PM   #76
G80_GuyGuy
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Drives: G80 M3 Competition
Join Date: Apr 2017
Location: Bay Area California

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Quote:
Originally Posted by jimbethesda View Post
Then you're turning off more than ASD. ASD is sound through the speakers.

You're now talking about changing the way the exhaust is handled?
The M sound button does run through the speakers like you mentioned but it also controls the exhaust flaps. So yes I am talking about the way the exhaust is handled through the M sound button. If it’s closed the exhaust doesn’t breath freely and I was wondering if that affected the horsepower since it is closing the exhaust flaps when you turn it off. Usually more flow more power.
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