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Old 05-06-2013, 09:27 PM   #27 (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)
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Quote:
Originally Posted by jlk16188 View Post
This is why I'm so puzzled. I feel like I'm doing everything right. I should by all means be able to get 50 mpg without a mpgurio or mods with my vx in stock form
Sorry your meeting with frustrations... BUT you are getting FE numbers that would be great if you were driving very well in a Civic that does not have lean burn, so I think you are not getting into--or staying in--lean burn mode. In post #17 I asked a question about your throttling that I don't think you've answered yet, but it might have the key to your problem. Might. Are you really hitting the throttle to 75% on each of your accelerations? That seems like hard tramping on the pedal. Pulse and glide on the freeway would keep you out of lean burn too, I believe, from what I have read. Also, reconsider thinking of gauges as mods, if that's what you're doing. If there is some way to get AFR data in your OBD1 vehicle, take it. That would be the easiest way to know if you're in lean burn. I think your hilly environment might also mean it is hard for you to get into lean burn--again because of throttling. Others who actually own and drive these cars can correct me as needed...
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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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