Forge Motorsport Adjustable Actuator for Subaru Impreza WRX STi 2006-2007

As turbo technology pioneers, Forge Motorsport brings our championship-proven actuator design to your Subaru STi. Our billet aluminum actuators first revolutionized boost control for legendary platforms including:

• Cosworth performance engines

• Renault 5 GT Turbo

• Lancia Delta Integrale

Key Performance Benefits

• Customizable boost pressure for optimal power delivery

• Improved throttle response and turbo spool characteristics

• Standard spring optimized for factory/slightly elevated boost

• Available high-rate springs for tuned applications (consult technician)

Technical Specifications

• Precision CNC-machined from 6026 aircraft aluminum

• Hand-finished at our UK facility

• Sealing options:
  • Standard Nomex-reinforced diaphragm
  • Optional piston-seal for maximum durability

• Laser-cut stainless mounting hardware

• Vehicle-specific design for 2006-07 STi applications

Package Contents

• 1 × FMAC5SUB Turbo Actuator

• 1 × Forge Motorsport identification decal

• Lifetime manufacturer's warranty

Important Considerations

• Base configuration matches factory boost levels

• Higher boost requires compatible engine management

• Professional installation recommended

• Product specifications subject to ongoing refinement

Technical Support Available
Our engineers can assist with:

• Spring rate selection

• Installation best practices

• Boost tuning parameters

Engineered in Britain. Trusted by Subaru enthusiasts worldwide.

Notes:

• Product appearance may vary due to continuous improvements

• For higher boost applications, select Diaphragm Type 2 (049) with FMPACTUN spring kit

• Listed pressures represent minimum regulated levels

• Contact our team for application-specific guidance

(Note: This version maintains all critical technical details while optimizing readability for STi owners. The vehicle-specific focus is emphasized throughout, with clear presentation of the dual sealing options and support services. All warranty and disclaimer information is preserved in a more accessible format.)