1. You don't need an intake to get a tune.
2. I got my tune, then got an intake, contacted LMS (at that time "Rick") and was told I don't need to change anything even though I added a CAI after the tune.
3. I had an Airaid and took it out because it neither improved the sound much nor gave me more percieved power.
4. I also have a K&N drop in - don't really notice much difference in or out.
5. I currently have a K&N CAI in there. Best sound of everything else, power gain is speculative. If you want BOV sound and your engine to sound like its trying to suck the air out of the universe (I stole this quote), you will like the K&N CAI.