Cooler air carries more oxygen, so if you can help your car somehow reach air that hasn't been heated by the engine, that extra oxygen makes a bigger bang from the same amount of fuel. Normally, air is drawn from the area right next to the engine, which, of course, is very hot because the engine heats up everything under the hood and all around it. And despite their simplicity, a cold air intake actually provides a decent horsepower boost for a small investment.Ī cold air intake works by moving the engine's air filter away from the engine, so that the air being sucked in is cooler.
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They're also relatively easy to install with just a few hand tools in an average-equipped garage. Cold air intakes generally cost just a few hundred dollars (depending, of course, on the manufacturer of the intake itself and the type of car you own). There are a few reasons a cold air intake is a popular modification for someone who's just starting to modify a car.