Depending on its sophistication, the cruise control could take other, possibly model-dependent factors into account. I could well believe the cruise control in my father's Jeep doesn't care what it is installed in. It lets the vehicle speed wander around so much, I have trouble setting it and usually give up when I am within a few mph of what I want. By comparison, BMW's cruise control is so precise you forget about the challenges its developers must have faced to get it that way. Who knows, it could be a PID controller that factors in the system mass and forcing function.
As to the ZKE, I wonder how it might react if it was coded in a 328i and then transplanted to a 318ti. Oh, no, what happened to my rear locks and doors? |