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Old 06-02-2008, 04:38 AM   #1 (permalink)
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Join Date: Jun 2008
Location: Victoria BC
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Gerald - '91 Pontiac Firefly 3dr
Team Metro
90 day: 40.08 mpg (US)
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VSS, tach, injector signal logic

I'm in the process of building a carputer for my newly acquired '92 Plymouth Acclaim. I'd like to build an interface to allow the carputer to calculate FE much like the MPGuino. The MPGuino uses the injector lead and VSS signal to calculate the FE. I'd like to also use the tach line for a digital tachometer. So...

What kind of signal logic do these lines use?

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