Ill try and help clear things up a little.
1. Yes you can keep the CAI and Bill can compensate for the tunes.
2. most people recommend here, including me, that you take the CAI off and put the factory intake back on, then do the "Gott's mod". search for it here and on other web sites and you will see what we are talking about.
3. return it and do either of the 2 options.
I vote number 2, then sell the CAI and use the money for the custom tunes from Bill!
Hope that helped!