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Old 08-16-2012, 11:32 PM   #2 (permalink)
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Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 21,835

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: 61.46 mpg (US)
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Get yourself an MPGuino - it'll help your driving SO much. It also works as a lean burn indicator, since your instant MPG will jump up noticeably when you enter L.B.

Originally Posted by gijoe985 View Post
2) Does it try running in lean burn MOST of the time or typically only at freeway speeds? I felt like I was in it a lot., but I am still trying to determine if I am feeling it correctly.
It's load based. So it's possible you're feeling it at lower speeds and in gears other than 5th.

3)Since lean burn allows a lot more air into the system
In lean burn, air consumption stays about the same for a given power output. It's the fuel input that drops. If your VX is like my Insight, you may have to open the throttle very slightly more to maintain a given speed when you enter lean burn, which would show up on your vacuum gauge.

4)Hills .... If I don't want to drop below 60mph, should I "floor" it in 5th or give it a little bit of throttle in 3rd.
An MPGuino will answer this ... and will tell you to stay in the highest gear you can.

Also: MPGuino, MPGuino, MPGuino. (Big fan of instrumentation. It's invaluable.)
Latest mods: 3-cylinder Mitsubishi Mirage. EcoMods now in progress...
Ecodriving test:
Manual vs. automatic transmission MPG showdown

has launched a forum for the efficient new Mitsubishi Mirage - fuel efficiency info for Geo Metro owners - electric car conversion on a beer budget
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