Built for performance as well as looks, the K&N Typhoon Air Intake System deletes your Mazdaspeed3's restrictive factory air filter and air intake housing and replaces it with smooth mandrel bent intake piping and K&N's famous conical high flow air filter and ambient heatshield. K&N intakes are designed to dramatically reduce intake restriction allowing more air flow to your engine, which means more usable power and acceleration throughout the entire RPM range. You can't argue with results; The K&N Mazdaspeed3 intake system has produced an incredible performance increase of over 25 horsepower at the wheels of an otherwise stock 2007 Mazdaspeed3. All K&N performance products are backed by a million mile limited warranty, so you know you are getting one of the best products possible from one of the most respected names in automotive performance.