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Old 04-30-2020, 08:55 AM   #4 (permalink)
redneck
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Join Date: Jun 2009
Location: SC Lowcountry
Posts: 1,517

Geo XL1 - '94 Geo Metro
Team Metro
Boat tails and more mods
90 day: 72.22 mpg (US)

Big, Bad & Flat - '01 Dodge Ram 3500 SLT
Team Cummins
90 day: 21.13 mpg (US)
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I like your method.

Plus, using a Honda Insight with its high mpg capabilities, expands the scale of resolution to see and discern subtle differences more easily.

Are you going to try testing smooth wheel coverings too ? They will most likely fall below your 2% threshold but, they might move the needle enough to gain a little Insight. (pun intended )

Looking forward to your results as you test the various aspects of automotive aerodynamics.





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