What effects have you noticed from aftermarket CAI?
If you mod the airbox - you will achieve the same peak power with or without the remap - see dyno chart in this thread by CORY
If you mod the airbox - you will have a significant low rpm torque loss which carries a bit into the midrange, the remap completely fixes this giving you 18- 22hp gains across a wide rpm band starting from low rpm. This is the only way known to cure this torque loss.
Of course, there are all the benefits of the auto trans tune as well, an extra 250rpm of engine speed to play with as well