DC Sport Air Intake Systems  provide the best of both worlds in heat protection and improved breathability.Every kit includes an air filter that requires no oil, therefore no chance in contaminating the mass air flow sensor which can result in loss of power and higher fuel consumption. DC Sports includes a high-flow air filter with your Cold Air Intake. The filter is oil-free, so there's no chance of contaminating your mass air flow sensor and throwing off your fuel consumption and power. The oil-free design also makes it easy to clean and maintain.