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Old 06-10-2016, 08:37 PM   #5 (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 charlesthemonkey View Post
I've been using fill-ups to gauge mpg's. That's been doing fine for me for a while. I'd like to get one of those obd2 transmitters, but I'm not sure if my car will transmit much useful info over it. I haven't had a check engine light even with some major problems with my car, so I can only assume that the obd2 system isn't working as it should...

In any case, I won't know until I try.
If you don't have a gauge, your pump procedure needs to be as precise as possible to ensure reasonable reliability. Pumps are not terribly accurate. So... always go for a refill when the tank is down near empty. Always go to the same pump at the same station. Always fill at the slowest fill rate. Always stop filling at the first click. Doing this will minimize pump error and give you more reliable data for gauging your actual FE.
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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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