GFB Wastegate Actuator for WRX Applications

The WGA, Wastegate Actuator is a high performance internal wastegate actuator designed to improve boost control on internally wastegated turbos. By using a significantly larger diaphragm area than the OEM actuator, the WGA has more control authority over the wastegate flap, meaning exhaust backpressure cannot override the flap position as easily, resulting in more stable and reliable boost control.

Supplied with 3 springs and a unique turnbuckle pre-load adjustment, the base boost pressure can be configured and adjusted from 5psi to 24psi for the best possible boost control.

The WGA features a longer stroke, shorter height, and more adjustment than its rivals.

WGA 7304 is designed to bolt on to Subaru WRX models from MY97-07 with the factory TD04 turbo. The 5psi and 7psi springs are installed for a base pressure of 12psi, and the 10psi spring is included in the packaging for further tuning options.

Please note that whilst this is a physical “bolt-on” product, it should be considered a tuning tool as it WILL increase boost pressure and therefore TUNING IS REQUIRED.

When diving into the world of increasing your car’s boost pressure, the limits of a factory-fitted wastegate actuator can soon become apparent. Even with electronic boost control it is not always possible to overcome wastegate issues such as boost drop off at high RPM, unstable boost curve, or an inability to achieve target boost.
Upgrading to a GFB WGA ensures you get the best possible performance and response from your turbocharger!

All GFB wastegates feature an investment cast body made from 253MA chromium-nickel stainless steel, a CNC machined billet stainless valve, and all stainless steel weld-on fittings and hardware, whilst the diaphragm is nomex-reinforced silicone. All this adds up to a wastegate built to handle extreme conditions with reliability you can trust!

• Most compact wastegate range on the market!
• Body, valve, seat and all mounting hardware is CNC machined from high-temp stainless steel
• Actuator housing CNC machined from billet 6061 aluminium
• Nomex-reinforced silicone diaphragm
• Internal shroud protects valve stem from excessive heat and prevents carbon-related sticking
• V-band clamp mounting system
• Made in Australia under ISO 9001

WGA Benefits:

• Faster spool up
• Less boost taper at high RPM
• More stable boost control
• Customizable spring rates
• Supports higher boost pressure

Application:

SUBARU WRX MY99-00
SUBARU WRX MY03-05 (Aka "Peanut Eye")
SUBARU WRX MY01-02 (Aka "Bugeye")
SUBARU WRX MY01-02 (Aka "Bugeye")
SUBARU WRX MY06-07 (Aka "Hawkeye")