Process West Single W460 Anti-Surge Fuel System Subaru WRX / STI 2008-2014 | PWFS03

Product Fitment:

2008-2014 Subaru WRX

2008-2014 Subaru STI

The Process West Anti-Surge Fuel System is a high-performance, fully integrated fuel delivery solution designed for the 2008–2014 Subaru WRX and STI. Built for demanding street and track applications, this system ensures consistent fuel supply under high-load and high-G conditions where traditional in-tank setups can suffer from fuel starvation.

Anti-Surge 2.4L Capacity Design

At the core of the system is a 2.4-litre surge tank, engineered to maintain a constant reserve of fuel around the pump. This prevents fuel starvation during hard cornering, acceleration, and braking, ensuring stable fuel pressure in performance driving conditions.

Walbro 460 High-Flow Pump Integration

This system includes a Walbro 460 fuel pump, known for its high-flow capability and reliability.

Key features include:

• Built-in check valve for improved fuel system stability
• High-flow capacity suitable for high-boost applications
• Consistent fuel delivery under sustained load

Silent Operation Engineering

Unlike many aftermarket fuel systems, this setup is designed for refinement as well as performance:

• Engineered for zero pump noise in-cabin perception
• Isolated surge tank design reduces vibration and resonance
• Quiet operation suitable for daily-driven performance builds

Upgradeable Modular Design

The system is designed with future expansion in mind:

• Easily upgradeable from single to twin pump configuration
• Supports higher horsepower fuel system requirements
• Modular layout allows flexible build progression

Clean OEM+ Installation

Despite its high-performance capability, the system is designed to remain visually discreet:

• Completely hidden in the engine bay
• Includes full wiring harness for plug-and-play installation
• Clean, factory-style integration

Key Features:

• Fits Subaru WRX/STI 2008–2014
• 2.4L anti-surge fuel tank system
• Includes Walbro 460 high-flow fuel pump
• Built-in pump check valve
• Silent in-cabin operation
• Upgradeable to twin pump configuration
• Wiring harness included
• Fully hidden engine bay installation

Performance Benefits:

• Eliminates fuel starvation under hard cornering
• Maintains consistent fuel pressure at high load
• Supports high-horsepower applications
• Improved reliability for track and spirited driving
• Stable fuel delivery for tuned engines