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Old 07-18-2008, 07:16 PM   #21 (permalink)
azraelswrd
Mr. Blue Tape
 
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Join Date: Jun 2008
Location: Fresno, CA
Posts: 345

AzxA - '06 Scion xA
90 day: 42.72 mpg (US)
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Quote:
Originally Posted by cfg83 View Post
Ahhh, I can't prove a thing, . Look at azraelswrd's post because it is helpful regarding how to do a coast-down test. My problem is, there is *no* place I can think of in LA to do this test. Because I don't have a "boxy" car like a Scion xB or a Jeep, I can't even perceive any road-stability benefit. If I could perceive increased road stability in a cross-wind, that would imply aero-improvement to me. Here is what they look like (I still need to add some below the window, just lazy as usual) :
How clean/dirty is your rear window? Any differences before and after using the Airtabs? From the website and testimonials, driving at highway speeds should reduce the amount of water/dirt/splash on the areas behind the tabs compared to those without tabs.

I'll add this to my list of future mods to test

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My 5 pillars of fuel efficiency:
  • driving style
  • aerodynamics
  • tires
  • weight reduction
  • engine maintenance
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