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      11-09-2012, 09:44 AM   #3
Private First Class

Drives: 2013 M5 Azurite Back
Join Date: Aug 2012
Location: Athens Ga

Posts: 144
iTrader: (1)

In all honesty I think the idling/starting sound levels are about the same, not much of a difference. However, when driving around there is a pretty big difference. It sounds amazing when going thru the gears!