Ok i finally got my super 44 duel exhaust on this morning....Sounds great especially with the k&N 63 series filter i put on last wk...Crazy how much the engine picks up and sounds...Gotta love these chevy trucks....Hypertech next...But i do got a ? bout it...Do u jus play with the settings til u find what u like? Can anyne share there settings that work best for them?