K&N Performance Cold Air Intake Kit 69-9503TFK with Lifetime Filter for 2006-2008 Volkswagon Jetta GLI/GTI 2.0L Estimated horsepower gain of 18.62 HP at 4500 RPM Designed to improve throttle response and engine sound Easy to install, usually in 90 minutes or less Replaces entire factory air intake system. To start-Turn off the ignition and disconnect the negative Lasts up to 100,000 miles before service is required (depending on driving conditions)