begining with pre installed EFI LIVE

Hey guys. MY name is Richard Turner. I am 43 years old and I am from the US. in a little state named West Virginia. I am from the southern coal fields in Boone County,WV. So if ya know , then ya know we are as bout as country as country can get. Anyhow, about 9 months ago I purchased a 2021 RAM . 2500 Bighorn, 4x4, crew cab 4-door, 6.7 Liter CUMMINS. Its currently setting on 18" 35x12.50 mudders. Now this may sound unbelievable, but the truck had already been deleted (factory parts took up whole back of the cab) and I found a hand tool that said "EFILive V3 AutoCal" on it . So of course this is my first Deisel, so I was smart enough not to mess with it until I learned a pal of mine had some knowledge. He then showed me where the tunes were located and how i could operate it. As a matter of Fact , when the hand tool was powering on, It showed Black Bandits trademark Logo and then went on to the menu screen. At that time i would navigate to the spot where i could select between 3 different tune files. Well, months later, there is no logo displaying at power up saying anything about Black bandits. nor can i access the tuning files anymore. I was wondering how i could recover those at first and honestly I'd still like to know if its possible to recover them. But also, after actually being informed as to what EFILive actually is, then I am actually more interested in learning how to operate this program. i want maximum power for pulling. I want fast, powerful take offs, i basicaly want to make as much power thats possible without hurting the engine. there has been mods done under the hood. I know the intake box was swapped. its an enclosed bow with see through dust sheild that removes in order to clean the K&N filter. im pretty sure the turbo has been swapped. not sure though. anyhow, i need help if anyone would care to help me. i giotta get her runnin right again cause shes not the same truck i first drove. like it lost tunes maybe? I DONT KNOW. SO CAN SOME BREAK THIS ALL DOWN FOR ME ? PLEASE