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Old 04-14-2010, 10:18 AM   #13 (permalink)
Deezler
Master EcoModder
 
Join Date: Apr 2008
Location: Michigan
Posts: 261

Bio Deezler (sold) - '03 Volkswagen Jetta GLS TDI
90 day: 50.78 mpg (US)

The Beast. - '03 GMC Sierra 2500HD SLT
90 day: 12.86 mpg (US)
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Thanks aeromodder! That is quite interesting. GM must have found that shielding the tires was better than not. But the width of their piece of quite small. I wonder if "tripping" the air flow over that hard edge helps make a curtain of air down the side of the vehicle.

I'm sure my plan would work out better if I bring the front piece out way forward on the bumper... but that is a lot more material, and more difficult to cut & shape. Hmmm....
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