I need the sim as I want to make sure the speedy is right as I'm getting erratic swings in the timing on # 1 TDC with the timing lock on. One thought is the modified dizzy I have made has a 2AV54 vane type hall effect sensor with a single tooth for the cam sensor ( 4 cyl sequential) is getting interference from the spark pulses as it is exposed inside? The crank sensor is a commodore VE cam sensor witha 36-1 toothed wheel with a 6.35mm tooth and gap( about 12mm long radial tooth, air gap about 0.15mm) I had LEDS and an external power source hooked to the sensors to test the input sensors and seemed fine under cranking with no spark pulses going to the dizzy. I don't have a scope, but may have to invest in one.
Any helpful thoughts are appreciated, thanks Chris.