diff between aem and intake cai

[Vinnie]

i think the injen is a foam element type that requires oiling whereas the aem is a paper element that doesent require oil. other than that these are prob worth checking out if u havent already (the aem site doesent have actual figures for a dc2 but theres lots of reviews anyway):
http://www.aempower.com/IndependantReviews.aspx
http://www.injen.com/testing.html

and as far as i know there isnt one big comparison of the different brands so ull prob jus hav to scout around and try and find the individual figures for each. good luck