If you mean the little maybe 1/2" or 3/4" inch stuff, I know that Performance Autoworld sells the colored stuff like you get in a CAI to go from your valve cover to your intake. Comes in different colors, and lengths (they stock it by the roll). If you were looking for a bulk variety of the stuff, and didn't mind waiting, Alfagoma in Burnside (behind Princess Auto) can order the stuff in, in any diameter/color you want. . . but I think they come in long lenghts (like 50' and longer).
