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      04-23-2019, 05:08 PM   #14
euro*
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Drives: F90 M5
Join Date: Nov 2012
Location: Toronto, Canada

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Maybe i don't understand your m5 system for exhausts yet, but the valve just closes 1 pipe exit on each side and that's it? My understanding on valved exhausts was that once the valves are closed, the exhaust has to work through a muffler instead.

But i dont see any muffler on our system, and just see 1 pipe being closed. Does it really make the car quieter?
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