GFB WGA internal wastegate for Subaru Impreza GT Turbo and 2.0 WRX (TD04)

Go Fast Bits (GFB), an Australian company certified to ISO 9001 since 1997, specialises in creating premium products to optimise vehicle performance. Every item in the GFB range is designed, tested and manufactured in Australia, ensuring consistently high quality.

The latest WGA internal wastegate series was specially developed to improve turbo boost management through an innovative internal mechanism. Original wastegates quickly reach their limits as boost pressure increases, even electronic models. The WGA internal wastegate ensures optimal performance in all circumstances, even at very high engine speeds.

The diaphragm, made from Nomex-reinforced silicone, offers superior turbo boost control through a larger surface area and a reduced diameter. The WGA range stands out for its compactness, making installation easier. With an 18 mm rod stroke, it allows a wide boost pressure range without needing to replace springs. The PEEK polymer rod guide minimises overall height, reduces friction and increases wear resistance.

Supplied with three different springs, this wastegate covers a pressure range from 0.34 to 1.51 Bar. Its benefits include:

• Faster turbo spool-up
• Less boost loss at high engine speeds
• Greater boost pressure stability
• Resistance to higher pressures
• Supplied with several springs

Compatibility: TD04 turbo on Subaru Impreza GT Turbo (1998 to 2000), Subaru Impreza WRX 7 (2001 to 2002), Subaru Impreza WRX 8 (2002 to 2005).