Cyborg, I purchased the Superchips programmer about three weeks ago, went to program my truck and the stupid thing wouldn't work. It would get to a certain point and it would flash "update required-call superchips". Needless to say I was kinda mad so I called Superchips and got no answer. I'm pretty impatient so I took it back to the place I bought it from and they gave me another one to try. Still didn't work. I got my money back and went across town and bought the Hypertech unit. It installed with no problems. I set it at level 3 and reset my tire size and drove off. I am pretty happy with it. I was going to get the EDGE EZ but nobody in town had it. Against my better judgement I bought the "super" chip. If I could go back I would have waited and just got the EZ, but I do like the Hypertech. It smokes Quite a bit on take-off but clears up when the boost comes in. I also put an elbow on the turbo. I hit 26lbs on a hard load, where before I could only reach 18 or so. Also the Hypertech programmer can be used on more than one truck. But the truck that currently is programmed has to be reset to factory settings before you can program the second truck. Hope this helps. I'm sure the superchip programmer works good too but I was too impatient to wait to have the thing sent out to be programmed.