05-14-2012, 04:23 PM
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#8 (permalink)
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Batman Junior
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
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If you can, I'd recommend doing your baseline comparison coastdown at the same time you want to test the modification.
Different days may produce different results, even without any changes at all to the car (from different ambient temperatures, tire pressure, drivetrain temperature, wind, fuel level) etc.
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