{"product_id":"tr-gtx29-dcbb-dual-ceramic-ball-bearing-turbocharger-stock-replacement-for-subaru-wrx-2015-forester-2014-fa20dit-gen-ii","title":"TR GTX29 DCBB Dual Ceramic Ball Bearing Turbocharger Stock Replacement for Subaru WRX 2015+ \u0026 Forester 2014+ FA20DIT (Gen II)","description":"\u003cp\u003eThe next generation GTX29 turbo for the Subaru FA20DIT engine features an 8% larger turbine wheel compared to the previous version. In addition, the turbo also features a brand new dual ceramic ball bearing design from its previous generation. On the compressor side, the billet wheel is point-milled to improve airflow and reduce turbulence with the bullet locking nut. This turbo is perfect for users who are looking for a quick spool turbo, gain in the overall power band, and top-end power for the Subaru FA20DIT turbo.  All necessary fittings and gaskets are included in the box to make the installation process painless.\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ctable style=\"width: 393.148px;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 205px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eBearing Type:\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 173.148px;\"\u003e\n\u003cp\u003eDual Ceramic Ball-Bearing\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 205px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eFlange Type:\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 173.148px;\"\u003e\n\u003cp\u003eStandard Subaru 5-Bolts\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 205px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eCompressor \/ Turbine Wheel:\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 173.148px;\"\u003e\n\u003cp\u003e72 mm \/ 61mm\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 205px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eTurbine Housing:\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 173.148px;\"\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 style=\"width: 205px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eActuator:\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 173.148px;\"\u003e\n\u003cp\u003e1.03 bar \/ 15 psi\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 205px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eHorsepower:\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 173.148px;\"\u003e\n\u003cp\u003e600 HP\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 205px;\"\u003e\u003cstrong\u003eOEM Replacement\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 173.148px;\"\u003e\n\u003cp\u003e- Replace OEM # 14411AA880 \/ 14411-AA881\u003c\/p\u003e\n\u003cp\u003e- Replace OEM # 14411AA880 \/ 14411-AA881\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAngular Contact Dual Ceramic Ball Bearing\u003c\/li\u003e\n\u003cli\u003ePoint-Milled Compressor Wheel\u003c\/li\u003e\n\u003cli\u003eLarger Turbine Wheel\u003c\/li\u003e\n\u003cli\u003e100% Bolt-On\u003c\/li\u003e\n\u003cli\u003eBullet Locking Nut \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eApplications:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e2015+ Subaru WRX\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e2014+ Subaru Forester (FA20DIT)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e2012+ JDM Subaru Legacy 2.0GT DIT, 2014+ Subaru Levorg and 2015+ JDM Subaru WRX S4\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e2014-2018 USDM Subaru Forester badged as Forester XT\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e2014-2018 JDM Subaru Forester badged as Forester XT\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e2015+ USDM Subaru WRX\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eKit Contents:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTurbocharger\u003c\/li\u003e\n\u003cli\u003eGaskets\u003c\/li\u003e\n\u003cli\u003eHardware Kit\u003c\/li\u003e\n\u003cli\u003eMotul 300V Competition 2L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFrequently Asked Questions: \u003c\/strong\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eIs this a bold-on turbo? \u003c\/strong\u003e\u003cspan\u003eAbsolutely, this is a blt-on turbo that fits seamlessly with the existing hardware. No modifications to the piping are necessary; it will fit perfectly.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat is the spring rate on the actuator? \u003c\/strong\u003e\u003cspan\u003e It's set at 15 PSI. The turbo comes equipped with an adjustable wastegate actuator for precise control of boost pressure delivery.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIs an aftermarket solenoid necessary?\u003c\/strong\u003e \u003cspan\u003eNo, it's not required. The stock solenoid is sufficient for the task. If you are aiming for incremental performance gains with a faster boost cueve, you may consider using our high precision, German-made boost solenoid. Our solenoid not only meets but surpasses factory specifications. We take pride in having one of the best boost solenoids on the market.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat's the maximum boost level?\u003c\/strong\u003e 32 PSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDo I need exhaust manifold?\u003c\/strong\u003e \u003cspan\u003eIf you are seeking additional performance and power, our turbo is ideally paired with an aftermarket manifold. This combination enhances spooling and increases high-end horsepower and torque.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ol\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.\u003cbr\u003e\u003c\/p\u003e","brand":"Tomioka Racing (TR)","offers":[{"title":"Default Title","offer_id":46718951653539,"sku":"TR-TS1052","price":2245.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0678\/3398\/7235\/files\/TR-TS1052_1__WEB.jpg?v=1767649796","url":"https:\/\/wiscomotors.com\/products\/tr-gtx29-dcbb-dual-ceramic-ball-bearing-turbocharger-stock-replacement-for-subaru-wrx-2015-forester-2014-fa20dit-gen-ii","provider":"Wisco Motors","version":"1.0","type":"link"}