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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > crazy exhaust question?

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      07-06-2009, 01:57 AM   #1
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crazy exhaust question?

hey guys i have the AA exhaust and it drones a little you think i can get a metal plate to clog one pipe and on a switch of a button it opens that pipe so i can hear it when i want to and quiet it down when i want to as well? my understanding is that is how the stock one works minus the button ofcourse any thoughts
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      07-06-2009, 02:20 AM   #2
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sounds like a lot of work.. and even then, it won't affect the droning.
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      07-06-2009, 11:51 AM   #3

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It took mechanical and computer engineers to make the stock one work right. I dont think its as easy as you think. Also, if the exhaust has separate piping from the DPs back, you'll create huge amounts of back pressure.
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