Mopar ecm issues. Why wont they work?

How to help determine if the boxes are "maybe better" or "maybe worse" quality:

One thing is that many of the really cheap boxes use fake transistors on the outside to make them "look", and the real transistor is a smaller device INSIDE

IF the previous test showed the coil is conducting, then with the thing connected and key "in run" see if there is any voltage on the heat sink/ transistor. It should be same voltage as coil NEGATIVE terminal. If it is zero, it's a fake transistor. That is, the "real" ones---the heat sink and transistor are not grounded. They are insulated with mica, and the "real" boxes would give you one heck of a "tingle" on a running engine.