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M550 exhaust flaps open = much better sound
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12-23-2018, 07:53 AM
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ksoze
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Originally Posted by
LetsrollM550
Thanks works great!!
It is just enough growl to be heard, but not enough to attract unwanted attention or drone at cruising speed.
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2018 M550iX-Dinan Stage 1 | 2011 E93 M3 Convertible | 2002 E46 M3 Convertible | 2002 E53 X5 3.0 | 2000 E39 540i | 1998 E36 M3 | 1988 E28 M5 | 1987 E28 528i
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