alrighty here we go, i have an 05 LLY that i built mainly with all PPE Componets and am very happy with how the truck performs, however i just bought an 03 that had a few things done to it and always looking for more so it has a DSP 5 position switch the previous owner had 4 tunes on the switch and one blank position, they were stock mild lope and hot how do i go about filling that blank position and where or who do i go to to find out what exactly this "hot tune" is, do i have to spend $900 to get the EFI live software and equipment to be able to do this?