Thread: Active Autowerke M2 Competition Midpipe Install Instructions
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      02-27-2019, 01:28 PM   #16
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Drives: 2019 F87 M2C, had 2012 E92 M3
Join Date: Nov 2011
Location: Phoenix, AZ

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Quote:
Originally Posted by CosmosMpower View Post
How much increase in sound volume would you say with the valves open? 20% 50%?
I'd say 50% sounds about right. Maybe even a bit more. And I have ASD turned off.
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