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Stock F30 335i Axle Back Exhaust Muffler Modification and Dissection
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03-23-2013, 10:51 AM
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buildbright
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I have been waiting for this! But this makes me relize the F30 stock muffler is a well designed unit so well I can't believe it. It's so quiet with this design I am a little shocked. But it does have a giant Hemholtz Chamber.
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