Extreme PSI :: Forced Induction :: Wastegates :: Internal Wastegates :: Go Fast Bits WGA Wastegate Actuator: Subaru WRX/STI 1999-2021 with IHI VF Turbocharger

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Go Fast Bits WGA Wastegate Actuator: Subaru WRX/STI 1999-2021 with IHI VF Turbocharger #35580

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The WGA is a high-performance bolt-on internal wastegate actuator designed to bring boost on sooner and hold it longer!

The WGA is all about increasing the “area under the boost curve”. With a larger diaphragm than the OEM actuator, the WGA has more “control authority” over the wastegate flap. This makes it harder for exhaust backpressure to blow the wastegate open during spool up and at high RPM, two areas of the boost curve where the factory actuator can be overwhelmed. This benefit is particularly useful with Subaru’s factory “2-port” boost control system, which cannot effectively shut off pressure to the wastegate during spool up

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 part # 7305 is designed for Subaru WRX STi models from MY99-21, and will also fit most single-scroll IHI VF turbos. The 5psi and 10psi springs are installed for a base pressure of 15psi, and the 7psi 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.

Read on for more technical information on wastegate springs, and how the correct spring selection can improve performance.

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Details

SKU GFB-7305

Retail price: $223.00

Our price:

$200.70

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Go Fast Bits WGA Wastegate Actuator: Subaru WRX/STI 1999-2021 with IHI VF Turbocharger #35580