Switching from EMS-4 to Rev built MS3 - Which trigger wheel?
 

Currently running the TSE EMS-4 with the 12+1 wheel, but I'm looking at picking up the MS3 since the EMS-4 is kind of a pain to deal with.

The crank pulley has a TSE 12+1 trigger wheel on it, but I remember seeing some people saying that the MS3 only works with the NB trigger wheel, a FM 36 tooth, and a few other things in between; however, most of the information is from 2013.

Do I have to pull the pulley to do this ECU swap?