{"product_id":"gfb-wga-7305-wastegate-actuator-for-wrx-sti-my99-21-single-scroll-turbo-only","title":"GFB WGA 7305 Wastegate Actuator for WRX STI MY99-21 (single scroll turbo only)","description":"\u003cp\u003eNOTE: does not fit twin scroll turbos such as those found on special models like Spec C Type RA.\u003c\/p\u003e\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\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\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\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\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\u003cp\u003eThe WGA features a longer stroke, shorter height, and more adjustment than its rivals.\u003c\/p\u003e\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\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\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003ch3\u003eTHE WGA IS A HIGH-PERFORMANCE INTERNAL WASTEGATE ACTUATOR DESIGNED TO IMPROVE BOOST CONTROL ON TURBO SYSTEMS WITH AN INTERNAL WASTEGATE.\u003c\/h3\u003e\u003cp\u003eWhen 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.\u003cbr\u003eUpgrading to a GFB WGA ensures you get the best possible performance and response from your turbocharger!\u003c\/p\u003e\u003ch2\u003eWGA BENEFITS\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003e(COMPARED TO A FACTORY-FITTED ACTUATOR):\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eFaster spool up\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eLess boost taper at high RPM\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMore stable boost control\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCustomizable spring rates\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSupports higher boost pressure\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Go Fast Bits","offers":[{"title":"Default Title","offer_id":44290702442595,"sku":"GFB-7305","price":278.9,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0253\/8848\/2659\/files\/7305_1-1-scaled.jpg?v=1782353707","url":"https:\/\/www.speedscience.co.nz\/products\/gfb-wga-7305-wastegate-actuator-for-wrx-sti-my99-21-single-scroll-turbo-only","provider":"Speed Science","version":"1.0","type":"link"}