K&amp;N 63-9035 AirCharger Performance Air Intake System<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Estimated horsepower gain of 13.75 HP at 5517 RPM</li><li>Designed to improve throttle response and engine sound</li><li>Easy to install， usually in 90 minutes or less</li><li>Replaces entire factory air intake system</li><li>Not legal for highway use in states adopting California emission regulations</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41byAKU-gWL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/7128yvtheHS.png" noproxy>