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Old 06-20-2008, 08:04 PM   #4 (permalink)
EcoModding Apprentice
Join Date: Dec 2007
Location: Ventura, Ca
Posts: 112

Whoop's Wheels - '89 Honda Civic Wagovan
90 day: 39.09 mpg (US)
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I don't know about the VSS, but on the injector, it runs off of what you might call negative logic. The power to the injector is supplied whenever the fuel relay turns on. The ecu provides a signal which grounds the other side of the injector when it turns the relay on.
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