Which way would you guys go? I love my 05 LLY extended cab but I do not plan on keeping for more than a year. The family is growing and we will be in need of a crew cab. Whatever tuner I get I would like the ability to use on the next truck. How hard is it to install the DSP5 switch? The autocal is about $400 more. Is this a canned tuner loaded with EFI live? I'm really getting confused!!