If you guys don't think it gets hot under the hood of a Trackick, just open it after a long high speed freeway slog. ( Or a paticularly long steep climb like skitime described) I can't remember what mine was like before turbocharging, it's been a while, but without my hood louvers I could fry eggs under there. Yes, I know the turbo generates heat too, my point is even in stock trim, it gets pretty damn hot under the hood of ANY vehicle, regardless of how many openings there are to let IN air from outside. It's getting the heated air OUT that's a problem for most vehicles, and the heat soak of all the parts and pieces close to the engine that's an issue. If you don't vent the engine compartment some way, just slapping an air filter on the end of a tube inside your engine compartment will not do anything to increase performance in any way,and will probably decrease actual performance, IMO. Snorkles are TRUE cold air intakes. The difference in ambiant air temp from 2ft to 6ft is negligable, if even measurable. The snorkle is not just for wading, it provides a CLEAN enviornment from which the engine can draw air. Most of the debris in the air is located at or near wheel level, snorkles draw in cleaner, cooler air from above the debris zone, and at speed can also provide somewhat of a "ram " effect, like the intakes of a modern motorcycle design.