The 6.4 trucks do not have a bpp cal function like some vehicles especially gm do. I checked on my ids on my personal truck. The vgt actuator is on cam bus but it?s terminated so it?s not breaking the communication line down but the ecm strategy may inhibit Cc if that module is offline I haven?t had time to read into the description operation. To the OP, have you asked on powerstroke.org or the army? There?s a few 6.4 experts there that may have answers. I can ask for you if you haven?t posed the question there.