there is a lot of info already posted on this subject. use the search engine and you'll find a boat-load of info. but just so you know, the 2.0 SC eco runs a little lean and more air wont be good for the motor. also the blower is almost running at full potential so a faster blower speed might blow it up. Psi-Fi is working on a piggy back kit that provides a pulley upgrade and a computer upgrade and its all supposed to be kick ass. just search for it, you'll find alot.