what do you mean only 20% of the time? Whats wrong with it the rest of the time?

Also, I read somewhere that there are injector issues. OBD1 injectors are "peak/hold" while OBD2 are "saturation" and that if I don't change the injectors to OBD1 they will fry either the ECU or the injectors. Any input on this? Can I use the H23 injectors? whats the flow for h22a and h23a injectors? thanks