ok i am back from iraq and have a place in colorado that can actually tune a lightning. i have to buy the handheld or they can burn a chip for what i have done. which way is the best way to go. i have a 4lb pulley lower and cai. boost by pass, ftvb,. the truck seem to run good now but everyone on here tell me to get it tune, so i will, just need help in which way to go. thank you in advance.