Thread: M5 Mufflers + CF Diffuser ( Back to OEM )
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      08-29-2018, 01:15 AM   #19
e92ben
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Drives: BMW M3 BMW 635csi
Join Date: Jul 2011
Location: Kenosha Wi

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How was the sound on the 535 with the oe n5 mufflers? Did you have the valves open?
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