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Old 08-11-2014, 09:39 PM   #9 (permalink)
Cyborg ECU
California98Civic's Avatar
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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Originally Posted by AusKiwi View Post
... I get a similar result using the trip computer's running average readout anyway. This shows the average l/100km over the previous 10 seconds. I have learned that if I aim to minimize that number it makes me a lot more light footed on the gas. Kind of like the economy driving tip I heard years ago, of driving with an eggshell between the right foot and gas pedal...
Well, light footed is not always what you want. You want precise footed. You want generally 75-80% engine load for best BSFC performance. The difference is enormous. Of the 30 mpg I have gained since hypermiling/ecomodding, probably half is due to techniques the gauge and how it enables quite precise engine load monitoring. If that is true, then I am gaining something like 150-200 miles per tank because of gauge dependent techniques. At $4/gal and and 33 mpg that would be at least what $20.00 per tank. The gauge cost $70 three years ago. I fill about twice a month, sometimes once. So figure just 20 fills per year... that's $1200 in three years, from a $70 gauge.

Best. Buy. Ever.
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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