Thread: Best way to improve sound without a tune?
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      09-15-2020, 01:06 PM   #7
///M4 F83
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Quote:
Originally Posted by ///M4 F83 View Post
exhaust flap delete plus a single midpipe (VRSF or SSR)
Correction, not SSR.

*Active Autowerke makes a single midpipe
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2015 BMW M4 F83 | Alpine White | Sakhir Orange interior | 6 speed manual

2008 BMW M3 E92 | Alpine White | Bamboo Beige interior | 6 speed manual
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