welp, the transistor version failed regression testing in my saturn miserably
I tried 50k, 4.7k, even tried adding another diode in series to the emitter so that the drop was at least 1.8v before considering the injector open. The change in resistors had no effect, the instant gph would go way high as compared to the control guino and the resulting fuel used was also high.
Adding the diode introduced a reboot whenever I hit the gas
eventually had to reflash the bootloader, stopped doing that when I shorted out the diode. wierd.
I'm running out of inspiration here. This fix for peak and hold is turning into a whole resistor/diode network. Coyote, I want to hold off on shipping a sec and see if any other simple fix ideas come up so I can get you a more "production" like unit.