please fill us in on the tuning capabilities of this aem ecu? sounds the go to me,
i am also using a piggyback greedy emanage which i beleive is similar to your apexi, but i want better, so i hope you do a write up when u get this to work!

im sorry i cant really give you any advice on the crank pickup as i dont know,
but when i made my flywheel it had to have three segments and a magnet, anf i beleive it used the segments as pickups every 120 degrees?

mite need to run an osoloscope over the sensor and see what signals it fires out