I've tried the EZ, Superchips, and Hypertech. I'm currently running the Hypertech mainly because of the speedometer recalibration. The Superchips gave me major smoke and heat. The Hypertech and EZ give me similar boost & EGT numbers and only smoke when stepping on it off-boost. The Hypertech does set an ECM fueling code but the truck runs fine. I'll just clear it and set it back to stock programming if I go to the dealer.