My Challenger is acting up. It runs rough on moderate acceleration and sometimes pings under moderate load like one or more cylinders are advanced too much. It has the MP black "vibration proof" 6 analog box.

I'm getting ready to check it all out and wondered if these are symptoms of a faulty ignition box.

The box is triggered by the "points" wire from an XFI box.

Last edited by ahy; 04/27/12 11:28 PM.