I have a upr x pipe on its way to me and I need a way to turn off the check engine light. I was going to try to make my own mil eliminators but i have no soldering iron and its just a pain in the but. I have thought about getting a handheld tuner since it will turn off my rear o2's and will let me adjust my speedo for the larger rims i have and gears I plan on getting soon. I already have a steeda timing adjuster and I am just not convinced I will get much of a hp gain out of a programmer. I found a place that has frpp 3.73's and a superchips handheld tuner on sale for $399 plus about 15 shipping. The superchips tuner doesnt allow for corrections in tire size nor does it raise your rev limiter. Their website doesnt specify if it turns off rear o2's. Does anyone have this tuner and like it? I would definately get the gears/tuner deal if it was a predator. Turning off the o2's is important to me.