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Old 12-02-2007, 09:06 AM   #10 (permalink)
MetroMPG
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Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 21,710

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 53.56 mpg (US)

Winter beater Metro - '00 Chevrolet Metro
90 day: 61.98 mpg (US)

Fancy Metro - '14 Mitsubishi Mirage top spec
90 day: 58.72 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
90 day: 66.29 mpg (US)
Thanks: 3,442
Thanked 6,264 Times in 3,238 Posts
I like being able to view fuel trim with this tool.


Fuel trim is the mystery variable behind the EGR fuel savings theory. It's where the 02 sensor data goes: constantly into Short Term to maintain stoich. Short Term, when it maxes out in either direction, informs Long Term and then resets to 0 to start all over again.

More details about fuel trim:
http://72.14.203.104/search?q=cache:...n&ct=clnk&cd=4
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Latest mods: 3-cylinder Mitsubishi Mirage. EcoMods now in progress...
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has launched a forum for the efficient new Mitsubishi Mirage
www.MetroMPG.com - fuel efficiency info for Geo Metro owners
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