I know when I bought mine it was: do you have any mods like CAI or not and then do you want Select a tune or not. Are you going thru WOT-Tuning? I have not checked out their site in a while. will do I just now checked and I have never noticed the price diff between the Advantage and Elite before. when I get to work and have a moment to research the diff. I would contact WOT at [email protected] and ask them their sales pitch between the 2 I have the advantage and am happy with it. I have no mods. Just let them know you have a CAI and they will adjust accordingly. Hope that helps.