The idea with a CAI isn't more atmosphere in, it's colder/cooler atmosphere in. But since the factory air intake is an actual CAI, and most of the AM CAIs are NOT, you're best off with the factory set-up. I think there's only one a AM CAI that does well enough to actually require a tune.
2012 GT Premium, Brembo PP, MT82, 3.73s, Blk/Blk. Bama 93R, Koni Yellow Rear Shocks, Hawk Ceramic pads, Luxurious & Plush Floor Mats