All Direnza air induction systems are designed in-house by Direnza engineers. Designed to replace the OEM airbox, offering more surface area compared to the standard filter and significantly enhancing air flow into your engine, boosting your car's soundtrack and performance. ---Supplied with heat-resistant silicone hoses ---Crinkle wrapped heat shield ---Supplied with a high quality cone filter ---Powder coated alloy pipework Fitment Subaru Newage WRX STI 2001-2007 Models Please Note: Installing this kit may cause the EML to illuminate due to the increased airflow. This can be corrected with an ECU remap.