Thread: speedometer is off, effect on fuel econ?
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Old 05-21-2012, 01:03 PM   #19 (permalink)
California98Civic
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Join Date: Mar 2011
Location: Coastal Southern California
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Black and Green - '98 Honda Civic DX Coupe
Team Honda
90 day: 66.42 mpg (US)

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Quote:
Originally Posted by Ford Man View Post
Thanks Ford Man, but the calculator is not quite precise enough, since inflation pressure can change the diameter a little and I run my tires pumped-up high. And anyway, the real question I am asking is about the disparity between the 8% or 9% speed increase and the 1.9% distance increase that my measurements so far suggest. Does the ECU is process data from the VSS in two different ways? Or does the VSS not supply the data for distance? I didn't find the answer in the service manual. Thanks in advance... james
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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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