In order to flash with autocal from what I've read I need to save a file in a .ctz with v8 software.

Do I need to use my v2 to use that or can I save the file from my laptop and use it to flash the PCM no matter where I am? I'm not always in an area I have my v2 with me(nor am I going to travel with it) but that doesn't mean a car doesn't need to be flashed/tuned.