Somewhere around 3.5K RPMs I get a 100% duty cycle off the injector negative (I have a multi-meter that will read duty cycle, Hz, etc...). This ECU switches BOTH the negative side and the positive side of the piezo injector. I?ll have to get back under the engine cover to check, but perhaps the ECU is leaving the negative grounded longer than it is supplying current to the positive side?
If true... So I would need to flip from the injector negative to the injector positive and change the PWM MODE polarity solder link? Assuming that the injector positive is just 12v and not some other insanely high voltage.
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