{"product_id":"gfb-internal-wastegate-actuator-for-subaru-wrx-sti-1999-2021","title":"GFB Internal Wastegate Actuator for Subaru WRX STI 1999-2021","description":"\u003ch2\u003edesigned to improve boost control\u003c\/h2\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSuits WRX STI 1999-2021\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe WGA is a high-performance bolt-on internal wastegate actuator designed to bring boost on sooner and hold it longer!\u003c\/p\u003e\n\u003cp\u003eThe 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.\u003c\/p\u003e\n\u003cp\u003eThis 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.\u003c\/p\u003e\n\u003cp\u003eSupplied 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.\u003c\/p\u003e\n\u003cp\u003eRead on for more technical information on wastegate springs, and how the correct \u003ca href=\"https:\/\/gfb.com.au\/tech\/tech-articles\/how-to-choose-wastegate-springs\/\"\u003espring selection\u003c\/a\u003e can improve performance.\u003c\/p\u003e\n\u003cp\u003eThe WGA features a longer stroke, shorter height, and more adjustment than its rivals.\u003c\/p\u003e\n\u003cp\u003eWGA part # 7305 is designed to bolt on to 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.\u003c\/p\u003e\n\u003cp\u003ePlease 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.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"video-container\"\u003e\u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/7EqxI7j-YYo\" width=\"560\" height=\"315\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"GFB","offers":[{"title":"Default Title","offer_id":57272705646975,"sku":"7305","price":157.68,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1038\/3156\/files\/7305.jpg?v=1775140594","url":"https:\/\/vuduperformance.com\/products\/gfb-internal-wastegate-actuator-for-subaru-wrx-sti-1999-2021","provider":"VUDU Performance","version":"1.0","type":"link"}