I have read a few different forums on this but it is still unclear to me. I have a 03 ss silverado. 6.0. I was wondering where to get the correct pinout for this. I dont belive there is an egr on my truck. If not i should be able to get the proper egr wires from a junkyard or .....? if there is i can use standing wires. what wires do i use for this. I am also using HP Tuners with this build.