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Old 08-01-2008, 07:53 PM   #2 (permalink)
Mr. Blue Tape
azraelswrd's Avatar
Join Date: Jun 2008
Location: Fresno, CA
Posts: 345

AzxA - '06 Scion xA
90 day: 42.72 mpg (US)
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I'd focus on the tires before aero then because you're not driving very fast. If you already did that (and forgot to mention it) then I would start with the easiest aero mods and that would be to clean up the front or initial point of fluid contact. Anything "unsmooth" will need to be smoothed out or over.

I think your plan of aero mods are sound -- clean up the underarea then address the rear-wheel area. Search the forum for how others have done it but before you go nuts and start spending $$$ I suggest testing and a monitoring device/system because driving habits can ALWAYS be improved upon and this is the best/easiest way to jump the MPG hurdle.

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