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Old 12-01-2008, 02:17 PM   #2 (permalink)
MazdaMatt
Master EcoModder
 
Join Date: Jun 2008
Location: London, Ontario
Posts: 1,096

2k2Prot5 - '02 Mazda Protege5
90 day: 33.82 mpg (US)
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i think that the side skirts give you some resistance to cross-winds corrupting the smooth air under the car. In racing, they give you some downforce because the low pressure air underneath is trapped better... take that as you will.
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