{"product_id":"tr-gtx3076-stock-replacement-for-subaru-wrx-02-07-and-sti-04-21","title":"TR GTX3076 Stock Replacement for Subaru WRX 02-07 and STi 04-21","description":"\u003cp\u003eIntroducing the GTX3076! Featuring a ball-bearing cartridge, the GTX3076 allows for exceptionally crisp and strong throttle response paired with faster spooling. Also packed with a billet compressor wheel, the overall weight of the wheel is lighter than other turbocharger wheels and allows for more room for air flow. Thanks to the billet construction of the unique TR blades, durability goes unmatched, keeping the GTX30 running for years to come. New to the TR GTX2971 and GTX3076 turbochargers are point-milled blades,\u003cspan\u003e which allow for reaching in all the small places between the blades to create a surface that provides maximum flow from the wheel design. In addition, the GTX3076 features a port and polished exhaust housing to minimize exhaust flow turbulence. \u003c\/span\u003eThis turbo is perfect for users who are looking for quick spooling and running moderately high boost pressures. All necessary fittings and gaskets are included in the box to make the installation process painless.\u003c\/p\u003e\n\u003cp\u003eDo you need more Motul 300v? Add some more \u003ca href=\"https:\/\/www.tomiokaracing.com\/collections\/motul-300v\"\u003e\u003cspan\u003e\u003cb\u003eHERE\u003c\/b\u003e\u003c\/span\u003e\u003c\/a\u003e!\u003cspan class=\"Apple-converted-space\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ctable width=\"603\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd bgcolor=\"#CCCCCC\"\u003e\n\u003cp\u003e\u003cstrong\u003eBearing Type:\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd bgcolor=\"#CCCCCC\"\u003e\n\u003cp\u003eBall-Bearing\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eFlange Type:\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003eStandard Subaru 5-Bolts\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd rowspan=\"2\" bgcolor=\"#CCCCCC\"\u003e\u003cstrong\u003eCompressor Wheel:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bgcolor=\"#CCCCCC\"\u003eIn: 57 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd bgcolor=\"#CCCCCC\"\u003eEx: 81 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd rowspan=\"2\" height=\"27\"\u003e\n\u003cp\u003e\u003cstrong\u003eTurbine Wheel:\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003eIn: 59 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEx: 53.8 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd bgcolor=\"#CCCCCC\"\u003e\n\u003cp\u003e\u003cstrong\u003eTurbine Housing:\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd bgcolor=\"#CCCCCC\"\u003e\n\u003cp\u003e10cm\u003csup\u003e2\u003c\/sup\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eActuator:\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e1.1 bar \/ 16 psi\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd bgcolor=\"#CCCCCC\"\u003e\n\u003cp\u003e\u003cstrong\u003eHorsepower:\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd bgcolor=\"#CCCCCC\"\u003e\n\u003cp\u003e550 HP\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eApplications:\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e2002 - 2007 Subaru WRX\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e2004 - 2021 Subaru STi\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eKit Contents:\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eTurbocharger\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eGaskets\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eHardware Kit\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eActuator\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eOil Pipe\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eWater Pipe\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWastegate actuator spring choice: 1.1 bar vs 1.3 bar (what customers need to know)\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eWhat the spring actually controls (and why it matters)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOn a pneumatic internal wastegate, the actuator spring sets your gate pressure (often called base boost): the boost level where the wastegate starts to open because boost pressure overcomes spring force. Haltech describes it simply: changing spring pressure changes the default boost pressure, and when boost exceeds spring pressure the valve opens and begins regulating boost.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChoose 1.1 bar (16.1 psi) \/ Red if:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYou want a lower boost map (street\/traction\/valet) around the mid-teens. Remember: you can’t go under the spring.\u003c\/p\u003e\n\u003cp\u003eYour normal target boost is roughly 18–22 psi and you want good controller authority and flexibility.\u003c\/p\u003e\n\u003cp\u003eYou’re building a setup where drivability and multiple boost modes matter (daily + weekend map).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChoose 1.3 bar (19.1 psi) \/ Silver if:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYou will not run low boost—your “low boost” is still ~19 psi or higher. (If you need 15–17 psi sometimes, don’t pick this.)\u003c\/p\u003e\n\u003cp\u003eYour normal target boost is roughly 22–28 psi and you want:\u003c\/p\u003e\n\u003cp\u003eless “work” from the boost control system to hit target, and\u003c\/p\u003e\n\u003cp\u003etypically better resistance to the wastegate being pushed open early (especially in higher load \/ backpressure situations).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThere are two different “maximum boost” questions people ask:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e1) Maximum boost your boost control can hold consistently\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUsing the GFB rule-of-thumb (target boost ≤ ~2× gate pressure) :\u003c\/p\u003e\n\u003cp\u003eWith a 1.1 bar \/ 16.1 psi spring, the “control stability ceiling” is roughly ~32 psi (2 × 16.1).\u003c\/p\u003e\n\u003cp\u003eWith a 1.3 bar \/ 19.1 psi spring, the “control stability ceiling” is roughly ~38 psi (2 × 19.1).\u003c\/p\u003e\n\u003cp\u003eReality check: that does not mean “safe to run 32–38 psi.” It means beyond ~2× gate pressure, boost control tends to get inconsistent because the actuator isn’t receiving enough meaningful reference signal for correction. GFB explains that once you go beyond double, boost control becomes less stable and more affected by variables like RPM\/load\/backpressure.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2) Maximum boost your turbo\/engine can safely run\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThat’s not spring-limited. It’s limited by:\u003c\/p\u003e\n\u003cp\u003eturbo efficiency and speed\/heat,\u003c\/p\u003e\n\u003cp\u003efuel quality and knock margin,\u003c\/p\u003e\n\u003cp\u003eintake temps\/intercooling,\u003c\/p\u003e\n\u003cp\u003eexhaust backpressure,\u003c\/p\u003e\n\u003cp\u003eengine\/clutch\/trans limits,\u003c\/p\u003e\n\u003cp\u003etuner strategy.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFAQ:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I run less boost than the spring rating?\u003c\/strong\u003e\u003cbr\u003eNo. Spring pressure is the lowest boost level you can reach.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes a stiffer spring automatically mean higher peak boost?\u003c\/strong\u003e\u003cbr\u003eNot automatically. It mainly raises minimum boost and changes how the wastegate behaves. Boost above spring comes from the control strategy.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy do people say “don’t exceed 2× the spring”?\u003c\/strong\u003e\u003cbr\u003eBecause boost control gets less stable as target boost gets too far above gate pressure; beyond ~double you tend to lose correction authority.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat spring gives the best spool and boost stability?\u003c\/strong\u003e\u003cbr\u003eA spring that puts gate pressure about 10–20% under your target boost is a strong general guideline for best performance.\u003c\/p\u003e","brand":"Tomioka Racing (TR)","offers":[{"title":"1.1 bar","offer_id":46718949884067,"sku":"TR-TS1046","price":2280.0,"currency_code":"USD","in_stock":true},{"title":"1.3 bar","offer_id":46718949916835,"sku":"TR-TS1046","price":2280.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0678\/3398\/7235\/files\/TR-TW1046_Web_Pic.jpg?v=1767649795","url":"https:\/\/wiscomotors.com\/products\/tr-gtx3076-stock-replacement-for-subaru-wrx-02-07-and-sti-04-21","provider":"Wisco Motors","version":"1.0","type":"link"}