Perrin ASM-TAC-729 EBCS Pro 3-Port Boost Solenoid for 08-14 Subaru STI

Vehicle Fitment

• 2008-2014 Subaru Impreza WRX STI (2.5L Turbo EJ257, AWD)
• 2008-2014 Subaru WRX STI (2.5L Turbo EJ257, AWD)

Features

• 3-port electronic boost control solenoid (EBCS Pro)
• Direct plug-and-play wiring with OEM-style connector
• Faster response and improved boost accuracy vs factory solenoid
• Helps eliminate boost spikes and creep when properly tuned
• High-flow internal design for stable pressure control
• CNC-machined aluminum body for durability
• Corrosion-resistant fittings for long service life
• Compatible with internal and external wastegate setups

Specifications

• Part Number: ASM-TAC-729
• Type: 3-Port Electronic Boost Control Solenoid
• Engine Compatibility: EJ257 2.5L Turbo
• Ports: 1/8-27 NPT with included barbed fittings
• Electrical: 2-pin OEM Subaru connector
• Mounting: Includes vehicle-specific bracket
• Application: Turbocharged STI models only
• Drivetrain: AWD

Included Components

• 1x Perrin EBCS Pro solenoid
• 1x Mounting bracket
• 3x Barbed fittings
• 1x Vacuum hose length
• 1x Hardware kit
• 1x Installation instructions

Product Description

The Perrin ASM-TAC-729 EBCS Pro is a high-performance 3-port electronic boost control solenoid designed specifically for 2008-2014 Subaru WRX STI models equipped with the EJ257 2.5L turbocharged engine. Replacing the factory 2-port boost control solenoid, this upgraded unit provides faster response and more accurate boost regulation, allowing tuners to achieve improved boost stability and reduced turbo lag.

Built from CNC-machined aluminum with corrosion-resistant fittings, the EBCS Pro is engineered for the harsh under-hood environment of performance vehicles. The plug-and-play OEM-style connector ensures simple installation without wiring modifications. Professional ECU tuning is required after installation to properly calibrate boost targets and fully utilize the enhanced control capability of the 3-port design.