What are the benefits of changing your air filter?

Improved gas mileage!|||Basic answer is a dirty air filter restricts air flow to the combustion chamber resulting in poor performance ans decreased fuel mileage|||Improved gas mileage, a cleaner-running engine, and a small gain in horsepower. Upgrading to like a K%26amp;N stlye air filter will give you a more drastic and noticiable increase in all though.|||save gas, longer engine life, and better performance.|||what are the benefits of changing your socks or your underwear the same goes dirt....dirt on your skin is nothing dirt in your motor costly|||more,cleaner air.|||In addition to the above (improved gas mileage, more HP), your vehicle will also start easier and idle better. If you let your filter go to long, you will start smelling fuel because it%26#039;s running too rich(too much fuel, not enough air). And if your city requires emissions testing, you could fail your emissions test. It increases the amount of pollutants into the air, causing humans to breathe harder.|||inproved efficiency, gain few hp|||less engine wear,,improoved gas mileage,,extended spark plug life ,, smoother running , increased power,.....|||keeps the crankcase oil cleaner and helps keep gas mileage at its best.