Hello everyone, just got EFI Live and well dont know how to tune at all. i know how to do data logging and minor changes like wheel size, gears, idle temp, adjust shift points etc. but obiously that doesnt do much tunning to the vehicle. i have a gmc sierra 5.3 with a cam.. it has already been tunned by Justin at Blackbear... now i want to start learning how to do it on my own.. i know many of you dont have time to tell me step by step so if you can direct me to a site or any pdf files that have a good explanation of how to tune and what steps to take that would be great. i dont mind reading and learning on my own.. but if any will give me the basics that would be great.. i mostly want to tune a couple of friends trucks.. they are 5.3 with minor bolt ons.. the only one that has more to it is a 5.7 cammed with lt headers, intake, throttle body and intake manifold... anyone???? thanks for any help...