What is the adjustable boost pressure range for this wastegate actuator?

This wastegate actuator allows for adjustable base spring pressures ranging from 5psi up to 22psi. You can fine-tune this range using the built-in turnbuckle adjustment feature without needing to swap springs.

What are the benefits of upgrading from a factory wastegate actuator?

Upgrading to this actuator can result in faster turbo spool-up, reduced boost taper at higher RPMs, and more stable overall boost control. It also supports higher boost pressures than the stock unit.

What material is the rod guide made from, and why is that important?

The rod guide is machined from PEEK, a high-performance engineering polymer. This material offers low friction and superior wear resistance, contributing to the actuator's smooth operation and durability.

GFB Mitsubishi TD04 Internal Wastegate Actuator

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Go Fast Bits

Specifications

Brand: Go Fast Bits
Part #: 7304
UPC: 9328022007427

Go Fast Bits

GFB Mitsubishi TD04 Internal Wastegate Actuator

Name: GFB Mitsubishi TD04 Internal Wastegate Actuator
Brand: Go Fast Bits
Price: 209.25 USD
Availability: InStock

$209.25

Fits 2002-2007 Subaru Impreza WRX. This internal wastegate actuator offers improved boost control and faster spool-up.

Key Features

Fits 2002-2007 Subaru Impreza WRX.
Features a unique diaphragm design with a bead retention system for a large effective area in a compact size.
Offers a long 18mm rod travel for controlling larger internal wastegates or increasing boost pressure.
Includes a pivoting rod guide machined from PEEK polymer for low friction and superior wear resistance.
Provides easy turnbuckle adjustment for fine-tuning base boost pressure from 5psi to 22psi without swapping springs.
Supports faster spool-up, less boost taper at high RPM, and more stable boost control compared to factory actuators.

⚠️ 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

Go Fast Bits is known for making well-built performance parts that offer a noticeable difference. This internal wastegate actuator is designed to replace the factory unit on your 2002-2007 Subaru Impreza WRX, giving you more control over your turbocharger's boost pressure. It's a solid option if you're looking to get more out of your turbo without needing to swap out the entire turbo setup.

What sets this actuator apart is its unique diaphragm design, which uses a bead retention system to achieve a large effective area in a compact size. This means it has more authority over the wastegate flap for better boost control. It also offers a long 18mm rod travel, making it suitable for larger internal wastegates or for increasing boost pressure beyond stock settings without changing springs. The pivoting rod guide is made from PEEK, a high-performance polymer, which reduces friction and wear while keeping the overall height low. Plus, the turnbuckle adjustment feature allows you to fine-tune your base boost pressure in minutes, ranging from 5psi to 22psi, without the hassle of swapping springs.

Compared to the factory actuator, you can expect faster spool-up, less boost taper at high RPM, and more stable boost control. This kit is a bolt-on replacement, making installation more straightforward. Please note that this part is not CARB approved and cannot be shipped to California.