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M2 Technical Topics > N55 Engine / Drivetrain / Exhaust / Bolt-ons / Tuning > Exhaust gasses flow with stock exhaust?

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      09-01-2016, 08:35 PM   #1
GoSlow2GoFast
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Exhaust gasses flow with stock exhaust?

Has anyone seen a good picture / graphic that shows exactly how the M2 stock exhaust routes exhaust gasses, and how it changes with the exhaust valve open versus closed? I note that on the stock setup there is only one valve, so curious how this all plays out...
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      09-05-2016, 09:54 AM   #2
SeanWRT
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Valve has to be inside the muffler and when opened routes the air flow out bypassing the fiber(silencer). There is nothing special about it.
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      09-05-2016, 04:41 PM   #3
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Quote:
Originally Posted by SeanWRT View Post
Valve has to be inside the muffler and when opened routes the air flow out bypassing the fiber(silencer). There is nothing special about it.
Understand what you are thinking, but in the technical briefing document the image sure makes it look like it is only on one set of the exit pipes, not anything internal to muffler. Sure makes it look like it is just affecting flow to the left side output, which seems like an odd way to go about this...
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