I have a 2.4 with ms3x. I'm trying to get the cam input working now. I had problems with the crank but I just needed to jumper 5 and 6 on j1. Anyway I have my cam set for ms3x input. I have it set to hall sensor as that was the only way to get any signal. http://www.msextra.com/doc/ms3/ignition.html#tachint357