there is the edge juice with attitude wich you have to hook up under your hood and the edge evolution wich i got you just lug it into your computer under the driver steelerwheel and it has a really nice pod that mounts on your dash i beleve i paid 600 but it you go on the internet you can get it for cheaper. It helped my fuel milage quite a bit cause i keep in on economy mode and as far as warrranty goes it will void your warranty but there is a very easy way around it you just return it to stock mode and unplug. Some people say that the dealership can tell but i used to run my 05 on performance mode with a bullydog and i blew my head gaskets and lots of other things with the engine so i unplugged it and got it towed to ford and they had no idea so it was all under warrenty