Process West Cold Air Intake Subaru WRX / STI 2002-2007 | PWCAI03

Vehicle Fitment:

• 2002–2007 Subaru WRX

• 2004–2007 Subaru STI

Improve airflow, throttle response, and intake sound with the Process West Cold Air Intake, engineered as a direct replacement for the factory system on 2002–2007 Subaru WRX and STI models. Designed to reduce intake restriction, this upgrade allows your EJ engine to breathe more efficiently for improved overall performance.

Improved Intake Sound

Replacing the restrictive factory airbox delivers a noticeable increase in induction sound, producing a deeper, more aggressive tone under acceleration—enhancing the driving experience without requiring additional modifications.

Precision Engineered Construction

Built from lightweight CNC mandrel-bent aluminum tubing, this intake provides a smooth, uninterrupted airflow path. A machined airflow meter mount allows the factory MAF sensor to be retained without modification, ensuring proper functionality and easy installation. The system is finished in a durable black coating for a clean, OEM-style appearance.

High-Flow Filtration Included

Each kit includes a high-flow K&N air filter, offering improved airflow and long-term filtration performance compared to the factory unit. The reusable design makes maintenance simple and cost-effective.

Straightforward Installation

Designed as a true bolt-on upgrade, this intake installs easily with no cutting or permanent modifications required—making it ideal for both enthusiasts and daily drivers.

Key Features:

• Direct replacement for factory intake system

• Fits 2001–2007 Subaru WRX / STI

• Reduces intake restriction for improved airflow

• CNC mandrel-bent aluminum intake piping

• Retains factory MAF sensor (no modification required)

• Includes high-flow K&N air filter

• Durable black finish for OEM-style appearance

• No cutting or permanent modifications required

Performance Benefits:

• Improves airflow and engine efficiency

• Enhances throttle response

• Produces a more aggressive intake sound

• Maintains reliable filtration with reusable filter

Note:

• Ensure all clamps and connections are properly secured during installation

• Periodic cleaning of the air filter is recommended for optimal performance