RE: Well, here goes nothing! Poulan 46 conversion RUNS.
yes, i've done the switch trick on a couple engines...works like a charm. the idle won't be as smooth as the mechanical advance but you'll never get a prop bite no matter where you set the throttle for start-up. i wire the sensors in parallel and switch only the output lead that goes to the SCR.
no noise issues where i fly so i don't use mufflers, only short headers. sounds really cool[8D]
dave