Hey i was wondering what software could i use to tune and how to. All i really want is to get a couple of HP out of it. Make it faster or even with the Escalade and that is about 20hp. (I already have a OBDii cable

 

there is those handheld programmers out there. I work at a GMC dealer and we had one denali come in with a handheld programmer, K&n intake, and something else that was little, forget what it was, but damn that thing sure did fly for a heavy SUV ...Gotta love the 6.0!