I dont really care if the little one feeds the starter, it is advertised from ford as a 6.4 twin turbo, from looking under the hood I cant even tell if there is a engine under all that stuff or not. I have no reason to tell anyone anything different than what I have personal experience with, this truck will pull like a mad mule. I have a 7.3 powerstroke with a bully dog also and this one will pull circles around it too.