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Old 06-01-2020, 01:19 AM   #4 (permalink)
Cyborg ECU
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Join Date: Mar 2011
Location: Coastal Southern California
Posts: 6,092

Black and Green - '98 Honda Civic DX Coupe
Team Honda
90 day: 66.42 mpg (US)

Black and Red - '00 Nashbar Custom built eBike
90 day: 3671.43 mpg (US)
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Originally Posted by JulianEdgar View Post
The above test was done on a 1982 model Honda Civic with a Cd of 0.45. I very much doubt the relevance of that testing to any more modern car shape.
I was not vouching for the study. The OP mentioned it. I was curious. I am not willing to assume it means they work, either. Anyway, my understanding it that the Evo design's airtab placement took a lot of windtunnel time. I imagine micro adjustments matter a lot.
See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.

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