I know there are a couple, but I would really get a tuner with the cai. It makes the biggest difference, and you'll need one in the future if you do any significant mods, change gears,etc. I know it costs a bunch, but out of all my mods so far the cai and tune was the best! Good luck!
Exactly. Just save your money so you can purchase the tuner and the intake. My personal recomendation is a VMP 93 octane tune and C&L with 88mm maf tube. I've seen the best numbers with this intake and Justin's tunes.