I am looking for a good tuner as well. How many canned tunes does it have? I have had my unit for 1 year now.Put an afe stage2 on it and a heartthrobe 4" exhaust. Made a big difference,especially the exhaust but looking for more.lol always looking for more! I want o make sure that I can put complete stock tune back in though. Does this unit work like that? what kind of price am I looking at? Also my truck spends lots of time pulling a toy hauler around the mountains in the summer, and need a good tow/haul tune as well. It does out pull any gas truck already but again always looking for more.