I have a 2013 GMC Sierra 1500 5.3. I have done the VVT, DOD and AFM delete on it I upgraded the Cam to a comp cam 220/224 212/218 @ .050 with 114 separation and .522"/.529" valve lift. It has only a K&N filter on it. Looking for input on the tune i paid for. I was not satisfied with the power I got out of it. I under stand I need to get Wide band to dial it in. I also read that i should do VVE calibration and MAF Calibration. Looking into doing those in weeks coming and I also have 50lb injectors i am going to install this weekend because i keeps getting a lean bank CEL. I just want to make sure im not missing anything before I get started doing the VVE and MAF. I appreciate any input and HELP.