hptuners is the shet! you have to go to hptuners.com and order it. you can write your own programs or just use it to data log and then email that info to a place that writes tunes ie intenseracing.com and they can see it, rewrite it and send back where you then load a new program into your car. i just go the pro set up w/ a lm-1 wideband. this thing should rocl considering i can tune all 96' and newer gm, pontiac, and the duramax. pm me if you need more help!