Thread: M5 Exhaust flapper mod demonstrated
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      05-07-2016, 05:05 PM   #72
mikkenoone
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Drives: BMW 340i F31
Join Date: Apr 2015
Location: Eskilstuna

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I used some hose clamps and here is the resault (sorry for the bad quality, I really need a new phone )
Increased sound in low rpmīs



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Last edited by mikkenoone; 05-07-2016 at 05:15 PM..
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