Quote:
Originally Posted by racprops
I am not changing that signal.
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I do not understand why gating/chopping the negative side is not an option. It absolutely is an option with a trivial change to whatever circuit you have interrupting "b+" if you know how to do it, and will not divorce you from your current investment in fuel consumption instrumentation.
The guino won't work as-is with any random fuel hack which is no surprise, and the guino WAS here first, so you could have planned for this configuration to keep things compatible.
Switch the ground side of the injector instead of "B+" and you are done. Just invert the thing doing the switching, what is the problem?