what are you saying is the "easy" rich?

I would do it by utilising the fact that the phase sensor has 2 pulses per revolution of the distributor shaft at 90 degrees apart, and the crankshaft has 4. from that, you know which pair to fire. am i missing something and oversimplifying it?

the other development sounds interesting. did none of the other marelli equipped factory cars use dizzyless (anything from the fiat group?)