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Old 03-19-2014, 06:17 PM   #16 (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)
Thanks: 2,373
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Quote:
Originally Posted by hxman View Post
I bought another o2 sensor, a genuine NTK 23400 from ebay that had been listed at $140 for $100 - the seller accepted my best offer and my gamble paid off. I installed that sensor about 5 months ago and I've been getting anywhere from 38 - 42 mpg ever since. In city mpg is more around 36-38 but mixed driving usually gets me about 40 mpg.

I drove only on the highway 60-65 mph the other day and got a sweet 45mpg. On the other hand, if had I driven 80mpg the whole time, I would get around 33-34mpg. What works for me is to keep the rpm around 2500 and keep a light and steady pressure on the gas pedal to stay in lean burn as much as possible.

Congrats on getting it running satisfactory. There is still more potential in that car, at freeway cruise. It looks like you might not be in lean burn all that often on the freeway. Aeromods and tire pressure and such will help.

__________________
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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