ETS Intake Kit 2004-2007 STI

Extreme Turbo Systems Intake Kit 04-07 Subaru STI | Cold Airflow Design | Performance Intake Kit

Overview

The Extreme Turbo Systems (ETS) Intake Kit for the 2004-2007 Subaru WRX STI is engineered to deliver world-record proven performance by optimizing airflow and intake temperature. Designed specifically for the STI platform, this intake kit relocates the air filter to the fender well, away from the heat of the engine bay. This strategic placement ensures the coldest and most abundant air supply possible, directly benefiting turbocharged Subaru engines that thrive on dense, cool air for maximum power output.

Built in-house with precision and quality in mind, the ETS intake kit features mandrel-bent 3-inch stainless steel piping and a 3-inch aluminum MAF housing designed for the stock MAF sensor. The cold air intake design paired with a high-flow K&N filter emphasizes durability and efficiency, making it a standout choice for enthusiasts seeking reliable, consistent gains. ETS’s commitment to quality craftsmanship and platform-specific engineering makes this intake a trusted upgrade for STI owners.

By improving airflow and reducing intake air temperatures, this intake kit supports enhanced throttle response, increased horsepower potential, and better turbo spool characteristics. For Subaru WRX STI owners focused on tuning and performance upgrades, the ETS intake kit is a foundational component that complements supporting modifications and tuning strategies to unlock the full potential of the EJ25 turbocharged engine.

Features & Specifications

This Extreme Turbo Systems Intake Kit is engineered for 2004-2007 Subaru WRX STI models and features a 3-inch stainless steel piping with a cold air intake design. Constructed from high-quality stainless steel and aluminum, it delivers improved airflow and cooler intake temperatures for Subaru enthusiasts seeking enhanced turbocharged performance.

• Brand: Extreme Turbo Systems
• Product: Intake Kit 04-07 Subaru STI
• Part Number: 200-10-INT-002
• Fitment: 2004-2005 Subaru WRX STI, 2006-2007 Subaru WRX STI
• Material: Stainless Steel (piping), Aluminum (MAF housing)
• Finish: Polished stainless steel piping, anodized aluminum MAF housing
• Construction: Mandrel bent piping, precision fabricated
• Origin: Made in USA
• Filter Type: K&N high-flow reusable filter
• MAF Housing: 3" Aluminum, stock MAF sensor compatible
• Design: Cold air intake with fender well filter location
• Pipe Diameter: 3 inches

Key Benefits

• Performance: Maximizes airflow and reduces intake air temperatures for improved horsepower and turbo response.
• Fitment: Designed specifically for 2004-2007 Subaru WRX STI models ensuring a precise, direct fit without modifications.
• Durability: High-quality stainless steel and aluminum construction resists corrosion and maintains structural integrity under heat.
• Maintenance: Includes a reusable K&N filter that is easy to clean and maintain, providing long-term cost savings.
• Engineering: Mandrel-bent piping ensures smooth airflow with no restrictions or turbulence, optimizing turbo efficiency.
• OEM+ Quality: The cold air intake design integrates seamlessly with the vehicle’s factory components for a clean, professional installation.

What's Included

• 1× Extreme Turbo Systems Intake Kit for 04-07 Subaru WRX STI
• 1× K&N high-flow reusable air filter
• 1× 3" aluminum MAF housing (stock MAF compatible)
• 3" stainless steel mandrel-bent piping
• Mounting hardware and clamps
• Installation instructions

Installation & Compatibility

The ETS Intake Kit is a bolt-on upgrade designed for straightforward installation with basic hand tools, making it accessible for enthusiasts with moderate mechanical experience. The kit fits directly onto the stock MAF sensor and replaces the factory intake piping and filter location, requiring no permanent modifications. Relocating the filter to the fender well may require minor trimming or adjustments depending on aftermarket fender liners or accessories.

• Professional Installation: Recommended for those unfamiliar with intake systems
• Modifications Required: None to minor trimming depending on vehicle setup
• Verify Compatibility: Confirm fitment for your specific 2004-2007 Subaru WRX STI model and any aftermarket modifications

Tuning is recommended to fully capitalize on the increased airflow and optimize air/fuel ratios for maximum power and reliability.

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