{"product_id":"tr-td05-20g-ball-bearing-billet-wheel-bolt-on-turbo-stock-replacement-for-subaru-wrx-02-07-sti-04-21","title":"TR TD05-20G Ball Bearing Billet Wheel Bolt On Turbo Stock Replacement for Subaru WRX 02-07 \u0026 STi 04-21","description":"\u003cp\u003eSlow spool no more! Tomioka Racing’s TD05-20G for Subaru now comes in a ball bearing version. This latest offering breaks the myth of slow spooling TD05-20G. Armed with dual ceramic ball bearings and billet compressor wheel, this TD05-20G will spool close to a factory turbo with the right tune. The configuration provides balanced \u0026amp; improved air flow to the TD05 frame. The faster spooling TD05-20G will inject more driving excitement to your daily Subaru. You can expect the same seamless fitment from this new turbo as its TD05-20G predecessor.\u003c\/p\u003e\n\u003cp\u003e \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\u003ch4\u003e\u003cstrong\u003eTurbo Characteristics:\u003c\/strong\u003e\u003c\/h4\u003e\n\u003ctable width=\"656\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003eBearing Type:\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003eBall Bearing\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003eFlange Type:\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\n\u003ctd rowspan=\"2\" width=\"100\"\u003e\n\u003cp\u003eCompressor Wheel\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd width=\"36\"\u003e\n\u003cp\u003eIn:\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd width=\"364\"\u003e\n\u003cp\u003e52.5 mm\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eEx:\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd width=\"364\"\u003e\n\u003cp\u003e68 mm\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd rowspan=\"2\"\u003e\n\u003cp\u003eTurbine Wheel\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003eIn:\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e56 mm\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eEx:\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e49.2 mm\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003eActuator:\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e1.1 bar \/ 16 psi (Optional 1.3 bar)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003eTurbine Housing:\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e8 cm2\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003eMax. Power:\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e480 HP\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4\u003e\n\u003cbr\u003eSpecifications:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eDual Ceramic Ball Bearing\u003c\/li\u003e\n\u003cli\u003eBillet Compressor Wheel\u003c\/li\u003e\n\u003cli\u003eFast Spool\u003c\/li\u003e\n\u003cli\u003eBolt-On\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eKit Contents:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eTurbocharger\u003c\/li\u003e\n\u003cli\u003eGasket\u003c\/li\u003e\n\u003cli\u003eHardware Kit\u003c\/li\u003e\n\u003cli\u003eMotul 300V 2L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eApplications:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e2002 - 2007 Subaru WRX\u003c\/li\u003e\n\u003cli\u003e2004 – 2018 Subaru STi\u003c\/li\u003e\n\u003c\/ul\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":"1.1 bar","offer_id":46718950080675,"sku":"TR-TS1050","price":1800.0,"currency_code":"USD","in_stock":true},{"title":"1.3 bar","offer_id":46718950113443,"sku":"TR-TS1050","price":1800.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0678\/3398\/7235\/files\/TR-TS1050_1__web.jpg?v=1767649796","url":"https:\/\/wiscomotors.com\/products\/tr-td05-20g-ball-bearing-billet-wheel-bolt-on-turbo-stock-replacement-for-subaru-wrx-02-07-sti-04-21","provider":"Wisco Motors","version":"1.0","type":"link"}