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Old 11-02-2008, 10:15 PM   #10 (permalink)
MetroMPG
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Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 21,640

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

MPGiata - '90 Mazda Miata
90 day: 53.78 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: 3,394
Thanked 6,200 Times in 3,211 Posts
It does a couple of special things - one you already figured out is it works on pre-OBD-II cars.

It also measures fuel use directly, via injector pulses, rather than estimating fuel use from other sensor data, which is how the SG works. This is important for being able to test certain intake mods.

Plus the open source possibilities of the Guino are just too cool.

Don't get me wrong - I love the SG.
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www.MetroMPG.com - fuel efficiency info for Geo Metro owners
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