Remove the whole stock assembly, minuses the lines that are hooked up near the top of the stock air tube. their should be 3 small rubber hoses running to your stock air box 2 of them youll plug into the nipples on your new air intake the third just cap off by sticking a small screw in the open end of the hose. Now as to which hose it is you plug off, I could only tell you if I went out to my car and looked where it ran to, and im too lazy to do that.