K&N 69-5301TTK Typhoon Performance Intake Kit for 2011 Hyundai Sonata 2.4L L4 Estimated horsepower gain of 7.75 HP at 5147 RPM Designed to improve throttle response and engine sound Easy to install, usually in 90 minutes or less Replaces stock air intake system Lasts up to 100,000 miles before service is required (depending on driving conditions)