Thread: Exhaust system database for the M3 and M4!
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      02-07-2016, 05:34 PM   #191
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Quote:
Originally Posted by F16RCE View Post
With the AA system do you lose the valve technology? So it's one volume all the time?
The car had downpipes in the video we posted.

& yes, the active system does not incorporate valves.
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