I am trying to use my v2 to tune a 2002 2500 with a 6.0l in it to get better fuel efficiency. I have done some research and seems to be a near impossible task. I have tuned my duramax with efi live but have not messed around with it on any gas engines yet. Is there any direction anyone could steer me in to help this thing not suck gas AS bad? Thanks in advance for any help