Well the Pro's for switching it that you can get custom tunes for how you drive your truck. you will have a little more power and depending on how you drive you will have some more gas mileage, plus you will get an awesome sticker to put on your truck! haha

, the only down side that I can see to switching is the money you have to pay. but for what you get I think the money is worth the service and the extra performance and confidence in your truck.