Go Fast Bits GFB 7305 Subaru WRX STI Wastegate Actuator – Adjustable Boost Control

Description

Upgrade your Subaru WRX STI (MY99-22) with the Go Fast Bits GFB 7305 wastegate actuator, designed for superior performance and precise boost control. Featuring an industry-first Silicone/Nomex diaphragm with a novel bead retention design, this actuator offers the largest effective area in the smallest footprint, ensuring rapid spool-up and stable boost levels. This innovative diaphragm design provides more control authority over the wastegate flap, translating into better throttle response and more consistent power delivery. The compact size of the GFB WGA allows for easy installation without unnecessary bulk, making it the shortest actuator on the market without sacrificing performance.
The actuator boasts an 18mm stroke, capable of controlling large internal wastegates or increasing boost pressure further without spring changes. Its unique pivoting rod guide, machined from high-performance PEEK polymer, minimizes friction and wear, ensuring long-term reliability. Adjustability is a key feature; with a turnbuckle mechanism and three supplied stainless steel springs ranging from 5 to 22 psi, fine-tuning your boost is straightforward and quick. No need to swap springs—simply adjust the preload to achieve your desired boost pressure.
This bolt-on high-performance internal wastegate actuator replaces the factory component, providing benefits such as faster spool, reduced boost taper at high RPM, and more stable boost control. It supports higher boost pressures, making it ideal for enthusiasts seeking to maximize turbo performance. Designed for direct fitment on Subaru WRX STi models from 1999 to 2022, the GFB WGA ensures an optimal upgrade over stock components, boosting your vehicle’s efficiency and power output. Please note, this product is not CARB-approved and requires acknowledgment of Prop 65 compliance before installation. With easy installation options available in bolt-on or universal kits, the GFB 7305 is the ideal choice to enhance your turbocharged Subaru’s performance.

Features:

• Industry-first Silicone/Nomex diaphragm with bead retention design for maximum control and compact size

• 18mm stroke for optimal control of large wastegates or increased boost pressure

• Pivoting rod guide machined from PEEK for low friction and high wear resistance

• Shortest design on the market for minimal bulk and optimal fit

• Turnbuckle adjustment for quick and precise boost tuning without spring swaps

• Includes three stainless steel springs ranging from 5 to 22 psi for customizable boost levels

• Bolt-on installation for Subaru WRX STI models from MY99-22

• Supports faster spool-up, more stable boost control, and higher boost pressures compared to factory actuators