Heat is the mortal enemy of performance and longevity. A hot engine compartment hurts performance, because it heats the incoming air and gasoline. yes, before the cool air can come in, the hot air must go out. And the best way to get hot air out is to let it do what comes natural to it. Hot air rises-so just open up the fop of that "oven" and let it out! Add a set of RunCool Heat-Escape Hood Louvers to your vehicle today.