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Instant MPG gauge for OBDII Answered

This is very simple. I want to know how to make a simple (& cheap) instant MPG meter for a vehicle fitted with OBDII (i.e. most recent vehicles) that will plug into the OBDII port.

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capt.tagon (author)2009-07-25

http://ecomodder.com/forum/showthread.php/obd-mpguino-gauge-2702.html

Work in progress, you have four different protocols, determine which your car uses, interface for that then you extract information to calculate MPG.

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