I believe either summit or Jeg's sells a product called "Cool Tape". According to an article in an old four wheeler, it works. Instead of insulating intake pipes, the cool tape is used to reflect engine heat. Thats what gets you, is the heat from the engine compartment. There is not much you can do about the air flowing through the intake. 22re's from the factory have air pickups right behind or next to the LH headlamp. Can't get much cooler than that.
While we are on the subjuect, modifying the intake tube will be worthless on a 22re, due to the fact the Air Flow Meter is the main restriction in the intake tube, and you can't change it(not only is it a small hole, but the air has to force the door open in the meter). Hence the reason car manufacturers switched to mass air flow sensors, as they flow more air, and measure air volume better than AFM's and MAP based systems.