More notes:
Software might need to reject pulses that are too short, and/or disable pin 2 interrupts briefly after an injector pulse to filter out oscillations:
http://www.ecomodder.com/forum/showt...9906#post19906
Cannot have both LOW and HIGH interrupts on same pin, need to utilize CHANGE interrupt somehow:
http://www.ecomodder.com/forum/showt...9907#post19907