Buck the unit was tested on several engines and it's running great, yesterday I flied H9 Cap 232 with a Zenoah 23 with the unit, it started easy by hand and runned great on the air. Cost is $80 including unit with NGK cap, hall sensor and neodymium magnet.
Mitty you are right, the ignition unit has not fixed curve, you can adjust the maximum advance while running the engine at full throttle, like a high needle. That way you got no advance at 2000rpm and the advance you adjusted at full throttle with a smooth curve automatically calculed by the microcontroller.
Fish I'm building units right now, I got some units reserved for the first guys that have ordered.