Actually I wouldn't use a CAI. Remember, on a turbo car you want the shortest path possible. That is more important than having colder air since the air will get heated up and cooled down anyway. Even if you have a 20 degree difference in 8inlet air temp, I doubt it will be more than 1 degree of difference once it gets to the throttle body anyway. Secondly the piping on the cold airs (any of them) will cause some wierd resonances and create a very off AF mixture curve. Unless you plan on dyno tuning it with a UTEC or similar AF device I say stick with stock intake and spend the money on mods that will actually make a difference. Uppipe/downpipe/exhaust will be a much better place to start.