A salesman at the dealership mentioned this and said it depends on how you drive the truck. The computer "learns" your driving style and if you have a little lead foot, the computer in the truck will start advancing the timing etc. each time you come up to a stop sign, because it has learned you like to goose it a little on take off. On the other hand if slow and easy is your usual mode of driving, and then you get on it, you take the computer by surprise and it takes it a minute to configure the engine for the power you want. Crazy isn't it? Your own truck is watching you, even as you drive...Can anyone say twilight zone?