Keeping a clean air filter in your car will help you obtain the optimum gas mileage for your car. A clean filter maximizes the amount of air your engine gets, which improves your car's performance. If fuel efficiency is a major concern, you can buy a high-performance air filter, which is designed to increase the air flow to the engine even more.
K&N Filters not only manufactures standard air filters but also high-performance filters that are only available for racing vehicles. The filters are tested using Coarse Test Dust. The filter's efficiency is determined by the amount of dust that the filter keeps out. K&N Filters aim for a 98-percent efficiency rating. The filters are available in a variety of sizes and shapes. They work best with a K&N intake system that is designed to maximize air flow coming through the air filters.
S&B Filters are designed, engineered and manufactured in the United States to meet the designs of ISO 5011. The filters and intake kits are covered for a million miles against defective materials and workmanship. The filters are designed to maximize that amount of air coming into the engine and minimizing the restrictions that could reduce the flow. Both of these elements help increase an engine's performance and fuel efficiency.
Green Air Filters use cotton fiber to clean the air coming through the filter. It can be washed to ensure maximum airflow and reused. The filters are designed with deeper air pleats to increase the filtration surface by 20 percent. More air can pass through the filter meaning more air reaches the engine to improve performance and mileage.
