Product Fitment:
2015-2021 Subaru STI
The Process West Front Mount Intercooler Kit is the ultimate cooling upgrade for the 2015–2021 Subaru WRX STI (VA chassis). Designed to unlock the full performance potential of your STI, this system delivers consistent, reliable power under real-world driving conditions where the factory intercooler falls short.
Whether you're carving through mountain roads, pushing hard on track, or running a tuned setup, this FMIC kit ensures your engine stays cool, responsive, and efficient.
Why the Factory Intercooler Falls Short
The OEM intercooler performs adequately at stock power levels, but under sustained load it quickly suffers from heat soak. As intake temperatures rise:
- Power output drops
- Throttle response becomes inconsistent
- The ECU pulls timing to protect the engine
The result is lost performance exactly when you need it most.
Superior Cooling Performance
At the heart of the system is a massive 685 x 275 x 85mm bar-and-plate intercooler core, delivering a significant increase in cooling capacity over the factory unit.
Benefits include:
- Lower intake air temperatures
- Increased air density for more power
- Consistent performance across the RPM range
- Reduced heat soak during repeated hard driving
This means stronger, more reliable performance—lap after lap or pull after pull.
Precision Airflow with Mandrel Bent Piping
The kit features CNC mandrel bent aluminum piping, engineered for smooth, unrestricted airflow:
- Maintains consistent pipe diameter through bends
- Eliminates airflow restrictions found in crush-bent piping
- Improves turbo efficiency and throttle response
The result is a more efficient airflow path from turbo to engine.
True Bolt-On Installation
Designed for ease of installation, this kit offers true bolt-on fitment:
- No cutting or permanent modifications required
- Includes all brackets, clamps, and hardware
- Clean, OEM-style integration
Key Features:
- Fits 2015–2021 Subaru WRX STI (VA)
- Large 685 x 275 x 85mm bar-and-plate core
- CNC mandrel bent aluminum intercooler piping
- Significant reduction in intake air temperatures
- Improves airflow and turbo efficiency
- Reduces heat soak under load
- Complete kit with all hardware included
- True bolt-on installation
Performance Benefits:
- Increased horsepower and torque consistency
- Improved throttle response
- Lower intake temperatures under sustained load
- Reduced ECU timing pull
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