All of the new tuners we sell comes with all tunes preloaded on them. Level 1 comes with tunes from 40 to 275HP. Level 3 40 to 350HP. All that's required to upgrade is an addational license that we will send you when you request a higher hp tune. Just like the old tuners you should back up all the files on the "sd" card after the first tune has been loaded on your truck. Make sure the transfer folder, tuning files folder and the stock files folder are all copied to your computer in case your "sd" card fails.