i want to start learning more about efi live i have the v2 scan tool and got my tunes from nick to start i want to learn fueling and start with that. seems very hard so far but basicaly want to start messing with my smoke and lope tuneon my dsp5. just trying to play around with this

 

Def not a program you want to "play" with You can cause some damage in the process. They do offer classes and imo are worth it, Nick should be able to give you some good pointers as well

 

I agree, if you just "play" with it you can change one parameter and the truck will run like garbage and you will probably hurt it, personally Im really impressed with how well Nick's tunes run, clean, smooth and the drivablility is pretty amazing, and its amazing how little you have to change to get a large increase in power... the duramax and EFI live are an awesome match