So I'm currently running at stage II with my AP. I've been throwing CELS ever since I changed my sparkplugs. I've been getting misfire codes up the U know what. Anyways I checked my gap and all that good stuff. So I have since changed my CAI to stock which I found thru I-Club member Rick. Voiala, no more codes. The car runs better and doesn't stutter any longer when acceleratting. Also no difference in performance. Anyways, I thought some folks might be having the same issues with their car and this may help a couple other fellow i-club folks here. IMO, I probably won't really need an intake unless I wen't to a much bigger turbo. :RockOn - not mine: