new technology-old noggin. i am trying to educate myself on the workings of the gen. 3 engines as i may one day use a carbureted ls motor. ok here's what i think i know. the m.s.d. ls ignition box picks up a signal from the reluctor wheel at the crank through a sensor. that info is then sent to the coil packs and any adjustments to the timing would be done via programming in the ignition box. am i close or way off ? if i'm understanding it correctlly it seems to be similar in principle to the mag plate, trigger sytems on outboards and sleds.