Timing retard

The turn off delay of a modern IGBT coil driver is about 3000 nano seconds, at 6,000 RPM, that equates to about 0.1 degree retard. There is also a small amount of logic delay, typically less than 0.1 degree. The thing about electronic advance, the curve can be controlled, including folding back, as desired, not limited by mechanical weights, springs ....

Yeah, the Mopar electronic distributors and boxes are 70's era, and compared to modern devices .....