+1
I have the aFe that has the more traditional enclosure design that will draw most of it's air from the front of the vehicle like the stock box. There are extra air intakes on top for added flow. What the big difference over the stock if the large air filter cone allowing more CFM air flow over the stock filter. I had this similar setup in my WRX with an AEM system and gain +26 HP by adding the air filter (already running a Stage 2 tune). So there is some truth about turbos gaining with these CAI systems.