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Old 09-03-2010, 01:07 AM   #21 (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)
Thanks: 0
Thanked 36 Times in 22 Posts
Updates? none to be had, really. The 3-M adhesive tape these VG's come with rocks, they are still on super strong. They are still bending the airflow, but fuel economy benefit is still negligible.

This is definitely not the magic easy way to cut drag though. Focus on grill blocks, flat under-tray/underbody panels, and wheel covers, mirror deletes, etc.

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