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Old 08-19-2012, 02:08 PM   #2 (permalink)
Sven7
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Join Date: Aug 2011
Location: Warren, MI
Posts: 2,456

Boo Radley - '65 Ford F100
90 day: 13.28 mpg (US)
Thanks: 782
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The consensus here is that VG's are useless for fuel economy, and sometimes detrimental because they sap energy to generate vortexes. You'll want to research boat tails, belly pans and gap fillers. The deflector is only the beginning!

Boat tail:
http://ecomodder.com/forum/showthrea...d-e-18151.html

Gap fillers:
http://ecomodder.com/forum/showthrea...ta-t-7839.html

Design:
http://ecomodder.com/forum/showthrea...ign-18585.html

Smooth belly pan:
http://ecomodder.com/forum/showthrea...n-s-18427.html

Start reading!

PS- here's the primer course
http://ecomodder.com/forum/showthrea...rt-c-9287.html
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