I saw an older thread, but the Ebayer referenced in it is no longer offering the preferred CDI unit.
Has anyone experience with this model from ScrappyDog?
From their info;
AC operated, spark advanced, no rev limit for GY6 scooter atv 50, 125, 150 engines in 152QMI, 152QMJ, 157QMI, 157QMJ, 139QMB 4strokes.
I was able to get the ones from ebay. While it's a decent setup for good spark, it doesn't really add much other than easy starting. I would save your sheckles.