Increased Fuel Economy
Engines rely on a mixture of fuel and air to create a combustion that powers your car (internal combustion engine). When there is not enough air getting to the engine, the vehicle compensates with more gas because of the lack of oxygen. Since stock intakes that come with your vehicle are designed to be quiet instead of fuel efficient, they tend to use a little more gasoline. Bringing in more air can reduce gas consumption and translate into an increased MPG. For enthusiasts who still care about fuel efficiency, cold air intakes are a great solution to get a little more mileage before having to go back to the pump.
Vehicles can experience an increase in horsepower. While this varies from vehicle to vehicle, new cold air intakes can add on about 5 to 25 horsepower. Cold air intakes can also increase the engine's responsiveness/acceleration because now there is more air available and ready for the combustion process. Enthusiasts who enjoy racing cars or who want to improve their acceleration, should definitely consider upgrading to an aftermarket cold air intake.
Long Lasting Filters
Stock air intakes that come with most standard vehicles normally have a white disposable paper filter to catch debris. Yes, these filters do their job in trapping particles that may potentially damage your engine, but the filters eventually require a replacement. Aftermarket cold air intakes, on the other hand, are fully equipped with durable air filters that usually have to be cleaned every 20,000 to 40,000 miles. This saves a ton of money and provides a much more effective filtration method.