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      07-14-2011, 03:03 PM   #29
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Drives: E92 M3
Join Date: Sep 2006
Location: San Diego, CA USA

Posts: 10,201
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A quick analytical calculation (using the stock M3s frontal area and Cd) shows 570 hp is good for 209 mph. Thus this is absolutely right on the money, believable and close to the cars true power. The mods probably bumped the drag up just a bit explaining the tiny discrepancy of forumula vs. equation.