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Old 06-09-2008, 02:37 PM   #1
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Need Help please, DIY scangauage

Hey everybody, i just got back from a weekend trip to Chicago. There and back i got awesome mileage, low 30's (in the gas-log). Out of a 1988 3.8L Buick Centur.. This got me thinking that without trying it got that good of mileage. If I had a mpg gauge I should be able to do better. The Buick does have OBDI.

So.. I am looking for some help/ guidance in either fabricating a gauge, or if there is some commercial that could be made to work. Thanks for the help.
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Old 06-09-2008, 02:39 PM   #2
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If you have a laptop with a stereo sound card you can use this trick..

http://www.gassavers.org/showthread.php?t=4250&page=2
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94 Altima 5 spd.. Stock.. 29 mpg combined with basic hypermiling techniques ..

89 Yamaha FZR400 Crotch rocket, semi naked with only the bikini fairing, no lowers, 60 plus mpg

87 Ranger 2.3 5spd.. Does not currently run..
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Old 06-09-2008, 03:32 PM   #3
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Do some searching of this forum and on google. There's a few solutions to your problem.

In my sig there is a link for a fuel rate meter, which hooks up the same way as fumesucker's great idea for using a laptop. It doesn't log data and doesn't show you a graph, but it does give you instant large-print numeric feedback in the form of a gauge if you hang the meter on your dash.

Also search for SuperMID.
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Old 06-11-2008, 08:16 AM   #4
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IT looks like i am going to do a combo of the above options. While scrounging around i was able to pick up a PIII laptop. That has a DMM interface port and software. So hopefully it will become a Dwell graphing display. Later on the plan would be to have the the software to compute mpg.
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Old 06-11-2008, 08:51 AM   #5
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Whoa, cool! More info on the laptop with DMM port?
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