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Old 01-29-2014, 10:31 PM   #8 (permalink)
California98Civic
Cyborg ECU
 
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Join Date: Mar 2011
Location: Coastal Southern California
Posts: 6,299

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)
Thanks: 2,373
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ChazInMT has good points. My 6th gen Civic has very similar lines to yours. The coupes are the best of the Civic stable in terms of aero. The lines are good enough that most improvements require a lot of experimentation. If this were mine, I would take off the kamm and play with the trailing edge stuff. On my Civic there is a little taper beginning toward the aft edge of the car. If yours is like that--it's very subtle--experiment with continuing it a few inches or a foot. ... or you could build a full boat tail. ... The side skirts probably help. I have them too. I am still planning a belly pan and diffuser and maybe another version of the rear box cavity I tried without results last summer.
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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.




Last edited by California98Civic; 01-29-2014 at 10:36 PM.. Reason: typo
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