4dr. 2006 4cyl. 2.2L Chevy Cobalt. Obviously not the most practical of cars to spend the money on throwing in either a cold air intake or short ram intake but i am going to do it. I was just wondering what anyone thought in terms of choosing one over the other? Pretty much I am looking for the littlest bit of hp i can get out of either and from my pretty minimal knowledge, i think i could get more out of the CAI but at the same time, i would get a deeper sound out of a SRI? Let me know your opinion on which would be a better investment. thanks.