Why do I need a 3-port boost solenoid with an aftermarket turbo or downpipe?

When you upgrade your turbo or downpipe, your engine can move more air. A 3-port solenoid offers more precise control over the wastegate actuator, allowing your engine management system to better regulate the increased boost pressure generated by these modifications.

Is this a direct replacement for the factory solenoid?

Yes, this Turbo XS boost control solenoid is designed to replace the factory 2-port solenoid on your 2002-2007 Subaru Impreza. It's intended to be a direct fit for easier installation.

Turbo XS 02-07 Subaru WRX/STi Boost Control Solenoid Kit

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Turbo XS

Specifications

Brand: Turbo XS
Part #: WS02-BCS
UPC: 053176488790

Turbo XS

Turbo XS 02-07 Subaru WRX/STi Boost Control Solenoid Kit

Name: Turbo XS 02-07 Subaru WRX/STi Boost Control Solenoid Kit
Brand: Turbo XS
Price: 118.84 USD
Availability: InStock

$118.84

Fits 2002-2007 Subaru Impreza. This Turbo XS boost control solenoid replaces your factory 2-port unit with a 3-port design, essential for managing boost with aftermarket parts.

Key Features

Fits 2002-2007 Subaru Impreza.
Replaces the factory 2-port boost control solenoid with a 3-port unit.
Required for proper boost control when using an aftermarket downpipe or upgraded turbocharger.
Helps manage boost pressure more effectively for consistent performance.
Designed by Turbo XS for direct fitment on the specified Subaru models.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Fits this vehicle

Subaru Impreza 2002-2007

Product Details

If you're upgrading your 2002-2007 Subaru WRX or STi with an aftermarket downpipe or a new turbocharger, you'll want to make sure your boost control system can keep up. This Turbo XS boost control solenoid kit is designed specifically for that purpose. It swaps out your car's stock 2-port solenoid for a more capable 3-port unit.

A 3-port solenoid offers finer control over the boost pressure your turbocharger can produce. This is important because when you add more airflow with an upgraded turbo or downpipe, the factory solenoid might not be able to manage the increased boost effectively. This Turbo XS unit helps ensure you get consistent and accurate boost levels, which is key for both performance and the longevity of your engine components.

Keep in mind that this part is not CARB approved and cannot be shipped to California. It's a direct replacement for the factory solenoid, making installation straightforward for those familiar with turbo system components.