{"product_id":"go-fast-bits-99-22-wrx-sti-wga-internal-wastegate-actuator-adjustable","title":"Go Fast Bits [99-22 WRX STI] WGA Internal Wastegate Actuator - Adjustable","description":"Massive Performance, Compact Size.\n•\tIndustry-first diaphragm design - the WGA’s Silicone\/Nomex diaphragm uses a new bead retention design that achieves the largest effective area with the smallest possible outside diameter. This keeps the overall size of the WGA down whilst giving it more control authority over the wastegate flap, resulting in better boost control. It’s like telling your turbo what to do instead of pleading with it!\n\n•\tLongest stroke – with 18mm of rod travel, the WGA is suitable for controlling the largest of internal wastegates, or the extra travel can be used to further increase boost pressure without having to change springs.\n\n•\tUnique pivoting rod guide – machined from PEEK (an extremely high-performance engineering polymer), the encapsulated spherical rod guide takes up significantly less height in the actuator body than other designs, whilst offering low friction and superior wear resistance.\n\n•\tNo unnecessary bulk – sounds obvious, but attention to detail in the design means the WGA is the shortest actuator on the market.\nMore Adjustable, More Easily. \nSetting the base spring pressure correctly for your application can have significant performance benefits, so we made sure the WGA offers the best adjustability on the market!\nWe supply 3 stainless steel springs that can be used in any combination ranging from 5psi to 22psi, but that’s only the beginning. Whilst other brands may offer more spring options (sold separately), changing springs to fine-tune boost pressure is time consuming and quite frankly, a pain. \nThat’s why we added another industry first - turnbuckle adjustment. The long stroke of the WGA means more adjustment range for the spring pre-load, so you can fine-tune your base boost pressure in a matter of minutes without swapping springs or removing the actuator. \n\nAvailable in bolt-on or universal kits - Check the GFB website for details.\nBolt on high performance internal wastegate actuator. The WGA replaces the factory turbo’s actuator, offering a larger diaphragm and adjustable base spring pressures ranging from 5-22psi to get the most out of your turbo.\nSubaru: WRX STi MY99-22\n\u003cul\u003e\n  \u003cli\u003eWGA Benefits (compared to a factory-fitted actuator):\n•\tFaster spool up\n•\tLess boost taper at high RPM\n•\tMore stable boost control\n•\tCustomizable spring rates\n•\tSupports higher boost pressure\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Go Fast Bits WGA internal wastegate actuator is a bolt-on, high-performance replacement for the factory turbocharger actuator on Subaru WRX STI models from 1999 through 2022. Part number GFB7305 uses an advanced diaphragm design, extended rod travel, and adjustable spring preload to provide greater control over the turbocharger wastegate.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFeature: Adjustable base spring pressure from 5 to 22 psi using three interchangeable stainless steel springs.\u003c\/li\u003e\n  \u003cli\u003eFeature: Turnbuckle adjustment allows fine-tuning without removing the actuator or changing springs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDesigned for demanding turbocharged applications, the GFB WGA uses a silicone and Nomex diaphragm with a high effective area in a compact housing. This design helps the actuator apply greater control authority over the wastegate flap while maintaining a short overall package. The 18 mm rod travel is suitable for large internal wastegates and can provide additional adjustment range for increasing boost pressure without immediately requiring a different spring combination.\u003c\/p\u003e\n\u003cp\u003eA pivoting rod guide machined from PEEK reduces friction and offers strong wear resistance while allowing the actuator to remain compact. The adjustable turnbuckle system makes it easier to set base boost pressure for a specific turbocharger and engine combination, helping support faster spool-up, improved high-rpm boost retention, more stable boost control, and higher achievable boost pressure compared with many factory actuators. Proper installation and calibration are required, and an ECU tune is required for safe operation. Verify turbocharger and vehicle compatibility before installation. This product is not emissions compliant for sale or use on pollution-controlled vehicles where prohibited.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompact high-performance internal wastegate actuator designed as a bolt-on replacement for the factory unit\u003c\/li\u003e\n\u003cli\u003eSilicone and Nomex diaphragm provides a large effective area for improved wastegate control\u003c\/li\u003e\n\u003cli\u003e18 mm rod travel supports large internal wastegates and increased adjustment range\u003c\/li\u003e\n\u003cli\u003eThree stainless steel springs can be combined to provide base pressure settings from 5 to 22 psi\u003c\/li\u003e\n\u003cli\u003eTurnbuckle preload adjustment enables quick boost-pressure tuning without removing the actuator\u003c\/li\u003e\n\u003cli\u003ePEEK pivoting rod guide provides low friction and wear resistance in a compact design\u003c\/li\u003e\n\u003cli\u003eSupports faster spool-up, reduced high-rpm boost taper, more stable boost control, and higher boost capability\u003c\/li\u003e\n\u003cli\u003eECU tuning is required after installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\n\u003cbr\u003e\n\u003cbr\u003e\nAir Freight Prohibited: false\u003cbr\u003e\nNot Carb Approved: true\u003cbr\u003e\nCarb Acknowledgement Required: true\u003cbr\u003e\nLtl Freight Required: false\u003cbr\u003e\nProp 65: Y\u003cbr\u003e\nPart Type: automotive\u003cbr\u003e\nEpa: N\/A\u003cbr\u003e\nRegular Stock: t\u003cbr\u003e\nUnits Per Sku: 1\u003cbr\u003e\nFitment:\u003cbr\u003e\nSubaru Impreza WRX STI 2004\u003cbr\u003e\nSubaru Impreza WRX STI 2005\u003cbr\u003e\nSubaru Impreza WRX STI 2006\u003cbr\u003e\nSubaru Impreza WRX STI 2007\u003cbr\u003e\nSubaru Impreza WRX STI 2008\u003cbr\u003e\nSubaru Impreza WRX STI 2009\u003cbr\u003e\nSubaru Impreza WRX STI 2010\u003cbr\u003e\nSubaru Impreza WRX STI 2011\u003cbr\u003e\nSubaru Impreza WRX STI 2012\u003cbr\u003e\nSubaru Impreza WRX STI 2013\u003cbr\u003e\nSubaru Impreza WRX STI 2014\u003cbr\u003e\nSubaru WRX STI Base 2015\u003cbr\u003e\nSubaru WRX STI Base 2016\u003cbr\u003e\nSubaru WRX STI Base 2017\u003cbr\u003e\nSubaru WRX STI Base 2018\u003cbr\u003e\nSubaru WRX STI Base 2019\u003cbr\u003e\nSubaru WRX STI Base 2020\u003cbr\u003e\nSubaru WRX STI Base 2021\u003cbr\u003e\nSubaru WRX STI Launch Edition 2015\u003cbr\u003e\nSubaru WRX STI Limited 2015\u003cbr\u003e\nSubaru WRX STI Limited 2016\u003cbr\u003e\nSubaru WRX STI Limited 2017\u003cbr\u003e\nSubaru WRX STI Limited 2018\u003cbr\u003e\nSubaru WRX STI Limited 2019\u003cbr\u003e\nSubaru WRX STI Limited 2020\u003cbr\u003e\nSubaru WRX STI Limited 2021\u003cbr\u003e\nSubaru WRX STI S209 2019\u003cbr\u003e\nSubaru WRX STI Series.HyperBlue 2016\u003cbr\u003e\nSubaru WRX STI Type RA 2018","brand":"Go Fast Bits","offers":[{"title":"Default Title","offer_id":47258281345126,"sku":"gfb7305","price":209.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/8703\/7237\/files\/f57fad4ce64003ddc5534c60be70d70eL.jpg?v=1790177544","url":"https:\/\/jdmuscleusa.com\/products\/go-fast-bits-99-22-wrx-sti-wga-internal-wastegate-actuator-adjustable","provider":"JDMuscle","version":"1.0","type":"link"}