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Old 11-14-2012, 10:08 AM   #92 (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
Thanked 2,174 Times in 1,470 Posts
Quote:
Originally Posted by redpoint5 View Post
Impressive MPG numbers considering the high RPMs.
Remember that with only a 2.588 gallon fill, there could be significant pump error. It is not good data, it is just what I have. Do these cars have a lean burn function in the ecu? Is that more standard now than in the 1990s? I also noticed that it seems to cut fuel off in gear under deceleration even at low rpms. I tested that by coasting to lights in neutral and in gear and found that at very slow speeds, under 25 mph, I could make the car's instant mpg gauge read higher mpg by shifting back into gear from a neutral, idle, coast down. Also, AC makes a big difference in this car I saw shifts of 10-15 mpg in the instant numbers whenever I turned on/off the AC.
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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.



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