I was waiting to see if someone would bring up the rain. I have to go out and cover mine when it rains, the water drips directly down onto the air cleaner, I'm worried it will follow the stud into the throttle body. The manufacturer recommends suspending a drip pan under the louvers to move the water out of the way, but that struck me as way too much work and something that would surely come loose and end up in my belt drive...They do move a lot of heat out of the compartment, though, you can see it and feel it when the fans kick on, it's like an outside defroster when it gets cold. I've never really driven much in the rain, I try to avoid it becasue the rest of the cab leaks, too. Probably have to put some tin foil over the louvers or something.
