if you are set on efi live, download the software from their site and get it setup on your lap top, its free (assuming you have one). This way you can keep your tunes on your computer and when you want to change tuning, all you have to do is borrow your neighbors black box and go out to the truck. You will have to buy a license from EFI Live to load your tuning in your truck unless your neighbor lets you have his other license (when you buy efi live you get 2 free ECM license and 2 free TCM license). they cost 100 bucks. then its just a matter of who you want to tune the truck but realize you will have to pay for their tuning as well.