Subaru WRX / STI Cold Air Intake by AEM Induction Increase horsepower and torque by replacing your restrictive stock intake system with the Cold Air Intake System by AEM! Designed and tuned specifically for the WRX / STI models, this intake is designed to give you horsepower gains of up to 32 hp @ 5400 RPM's and will not only increase overall performance but it will also giving you a more aggressive induction sound. Included in the kit is an over-sized AEM Dryflow synthetic filter that allows an intense amount of air flow and can last up to 100,000 miles before needing to be cleaned (depending on driving conditions). Cleaning is simple as the filter is washable and oil-free. The AEM Intake System is designed to use the original air box space and is protected by a heat shield which helps reduce inlet air temperatures. The intake tubing is constructed from mandrel-bent aluminum which is available in either a wrinkle red or a wrinkle black finish!AEM Induction Subaru WRX / STI Cold Air Intake Features: Increased horsepower and torque; 32 HP gain @5400 RPM's Tuned and dyno-tested specifically for the WRX / STIMandrel-bent aluminum intake yubing Washable & reusable oil-free filter AEM Lifetime Limited Warranty