It's all built in to the PCM now. You can try, but things wont work right. Even your radio in those cars gets an update from Ford every time one comes out. It also is tied in to your diagnostics that can be pulled when you take it in for service or when they need to update the software version of your engine/transmission. Onstar does the same thing.I have a newer truck. It has that Ford app thing on the display for maintenance reminders and such. I've been wondering for a while if there is a way to disconnect the truck from anything outside techwise and if they built in negative effects if that is done. OCM computer or something? I'm sure if there is a solution they have made it cost prohibitive for most. Would love to hear if anyone has done, or knows how, to do this.