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Old 04-18-2012, 10:10 PM   #341 (permalink)
Join Date: Jul 2008
Location: North Central Alabama
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A 4' Kamm Back should get you about 12 percent less drag, and 6 percent better FE on the highway. This is a "top only" estimate, and does not include what might happen if the bottom is completed also. The estimate is based on my SedanKamm that yielded these numbers.

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