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Old 06-14-2011, 01:28 PM   #1 (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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DWL and timing advance gauges

I greatly improved my DWL technique by following PaleMelanesian's recommendation of 75-80% load as a target--started just yesterday. Already see results on some mpg-deadly hills on my commutes. Observation and question: I monitor timing advance on my Ultra Gauge and sometimes, usually driving at 90%+ load but sometimes down near 80% the timing advance reads a negative value. So I back off the throttle slightly to return the reading to a positive number. So I am driving between 75-80% load and the low end of the positive timing advance turf. Good? If so, can I improve it? How? What do you think?

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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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