Thread: Better sound from a stock 550 exhaust
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      04-05-2013, 01:24 PM   #16
Zetti_QP
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Drives: 2013 BMW 550i xDrive M-Sport
Join Date: Apr 2013
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Thats very simple and NO costs!

Deactivate the exhaust flap...

I have do it and now much better sound! Very easy to do!
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2013 BMW 550i xDrive (click link for Details)

2008 BMW Z4 3.0Si
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