I'm wondering which tuner I should go with? I'm interested in the SCT XCalibrator 2 or the Diablo sport. They are close on price and seem to do the same things. Which ones do you guys have and how do you like them. For right now, I'm only getting it to shut off my rear o2 sensors since I'm getting an o/r h-pipe. I know I can order them with additional tunes so when I add other bolt ons I can change the tune. Thanks in anvance.