Dryflow Air Intake System

The Perrin Performance Cold Air Intake is engineered to enhance the performance and aesthetics of your 2008-2014 Subaru WRX or 2008-2017 Subaru STI. This system is designed to deliver a significant increase in horsepower and torque, with a claimed gain of 15-30 WHP. The precise MAF alignment and calibrated plumbing size are critical for maintaining optimal air-fuel ratios and preventing the illumination of check engine lights, a common issue with competing intake designs. The MAF sensor bung is CNC machined to ensure perfect alignment, which is essential for accurate ECU management. The intake utilizes a Dryflow filter, offering the protective benefits of an oiled filter without the mess, maintenance requirements, or risk of over-oiling. This filter is ideal for dusty conditions due to its rigid screen that helps prevent debris damage. An included airflow straightener is key to smoothing incoming air, providing uniform airflow to the MAF sensor for reliable and consistent readings. This component is crucial for unlocking consistent horsepower gains. While quiet during normal driving, the intake system comes alive under load, enhancing the natural sound of the turbo flat-4 engine and making the blow-off valve's sound more prominent. This Perrin Cold Air Intake is CARB Approved (EO Number: D-735), ensuring its legality for road use in California and other states that adhere to CARB emission standards. The intake is finished with a durable, textured wrinkle powder coating, available in black or red, for long-lasting good looks and protection against the elements.