New tuner here

this is my rocket as she sits also on any maps i do live in colorado so thin on oxygen here a mile above sea level
I'm n Reno, almost as high. After you load a new tune, do a reset adapt, then the "12 minute tune".
 
You have to buy the cable (Amazon sells it) and learn how to use TuneECU. It's all there on TuneECU.com. You need to do the same things to load any of the available tunes. Do you have a laptop with Windows XP or 7?