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Old 09-08-2009, 10:55 AM   #10 (permalink)
majestic
EcoModding Lurker
 
Join Date: Sep 2009
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LegacyGT - '01 Subaru Legacy GT
90 day: 33.72 mpg (US)
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I am not an expert on aero, but my thinking was the flow becomes turbulent because the flow detaches from the body. If the flow has nothing to flow upon, the air goes turbulent. Would these strakes not give the air another axis to flow against?

And perhaps the A4 is not the best example, but the idea is meant for the rest of us with less than stellar aerodynamics from the factory.
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