[coolhandcountry]

Well the model memory is good for different cars. You don't need to change crystals if they are the same frequency. When you change cars you need or have different center for steering and shifing. You can adjust the end points on the better controllers as well for shifing steering and throttle. Helps control truck more if you cut the throttle back some. If you buy one and drive it for little bit. You won't want to go back to stock.