I have a 2002 jeep grand overland with the 4.7 HO. I love the motor and all but we all know the 4.7s lack a little power. I been looking for a programmer or a chip but I don't know what to go with. Tax time is almost here and I would like to get one. I want something that can offer better towing, HP, and gas. I only run 93 octane in it here in Virginia but I don't know if other states will have 93 when I go on trips with my family. I have only ever herd of superchips having made one for my jeep but I would like more info into others and what is the best one for the money.