I just finished installing my Dual Black Teflon Needswings CAI...........and I must say OOOH yeah!! I can feel the power increase from just the single. I don't have any dyno numbers but "just in the pants feel". I don't know if the addition of 1 more made a difference in the sound of the supercharger whine as before but this thing is screaming now!! I smashed the gas and hit redline so damn fast I literally had to let up till it shifted. Thanks ROB!!! Bad *** man!!! Money well spent.