I just installed the INJEN CAI last night and all I can say is ... OH MY F*CKING GOD! What a differnce especially in 2nd and 3rd gear in the 4500 to 5500 RPM Range. The sound is incredible. I waited almost a year for the damn AEM that will never come out. I am telling you, this is one of the best bang for the buck MODS available. I paid $230. plus $17.00 shipping and insurance off of Ebay. I got it from California in about 3 days. I decided to have it installed as a short ram after talking to a Toyota master tech and the problems he's seen with installing the full unit up front. He's seen customers who have installed the full unit having engines bogged down with water making the engine stall. I don't need that with the rain we get in Chicago. When I take my ride to Black Hawk Farms Raceway, I'll install the full unit.