HPS 37-566BL Blue Cold Air Intake Kit (Converts to Shortram Cool Long Ram CAI) Fine-tuned by HPS to deliver dyno proven performance gains +27.1 Whp horsepower, +26.8 Ft/lbs.. torque and improve throttle response; Does NOT require tuning after the install. Powder Coated Blue light weight mandrel-bent aluminum alloy piping replaces the stock restrictive air box and optimize the air flow. Can be converted into short ram intake. Features HPS signature race proven reinforced silicone hoses and industrial grade 100% stainless steel T-bolt clamps. The included world's best K&N High-Flow, Washable/Reusable Air Filter is backed by Million Mile Limited Warranty. The included installation instruction has clear pictures and description to guide the installer throughout the whole process. Fits 2008-2014 Subaru WRX / STI 2.5L Turbo. No modification is required, however, removal of front bumper is necessary during the installation. CARB Exempt: No.