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Old 08-27-2016, 11:14 PM   #4 (permalink)
Cyborg ECU
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Join Date: Mar 2011
Location: Coastal Southern California
Posts: 6,097

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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Originally Posted by 19bonestock88 View Post
I checked this, but as it seems, I've done some 30k miles in various vehicles with the UG connected, so the only way to reset that in any reasonable time would be to do a factory reset... Maybe telling the UG that the engine is ~10% larger would help?
I don't think you need a factory reset. I do think Fat Charlie is correct. You should be able to just reset the engine and miles and all that and be good. The califbration Fat Charlie describes works best if you go to the same pump each time, pump on the slowest flow rate, and do it three times. After that go to whatever pump you want, but iunderstand that there is pump variation, and that the UG is only estimating fuel use, so it will vary. Not every variation should result in calibration.
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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