Originally Posted By: martinfocazio
I want to build a gauge for my car that is sort of a taximeter. Does OBD provide the kind of data needed? (Miles Per Gallon/Miles Driven)?

While it could be fashioned, OBD II is very sensitive to the voltage drop across a given circuit, so unless you had a detailed wiring diagram for the vehicle in question, at the very least you'd very likely generate an error code from the branch that you tapped into.

Jim
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My EDC and FAK