F8X M3/M4 Exhaust Comparison - Stock vs. Dinan Free Flow Exhaust

05/15/2015
10 min read

F8X M3/M4 Exhaust Comparison - Stock vs. Dinan Free Flow Exhaust

05/15/2015
10 min read

A sound comparison between two BMW M4s, one stock, one equipped with our F8X Free Flow exhaust system.

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