{"product_id":"cobb-turbo-heat-shield-2002-2007-subaru-wrx-2004-2008-forester-xt-2004-2019-sti-gcab8q","title":"Cobb Turbo Heat Shield - 2002-2007 Subaru WRX \/ 2004-2008 Forester XT \/ 2004-2019 STi","description":"\u003ch4\u003e\u003cstrong\u003eThe Downpipe: Where Stage 2 Actually Begins\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe Cobb Stainless Steel Downpipe for the 2019-2021 Subaru WRX STI is the component that unlocks Stage 2 tuning on the VA STI. The factory downpipe houses a catalytic converter that restricts exhaust flow significantly at Stage 2 power levels — replacing it with the Cobb high-flow downpipe removes that restriction and allows the turbine to spin more freely, improving spool, reducing exhaust back pressure, and enabling the Accessport Stage 2 OTS map. Note: check emissions regulations in your area before installation.\u003c\/p\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/products\/dcb995b64b3a630b45a4361e387590b1.jpg?v=1697903468\" alt=\"Cobb Turbo Heat Shield - 2002-2007  Subaru WRX \/ 2004-2008 Forester XT \/ 2004-2019 STi\" style=\"width:100%;max-width:100%;margin:20px 0;border-radius:4px;\"\u003e\n\n\u003ch4\u003e\u003cstrong\u003eLess Back Pressure, More Turbine Efficiency\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe turbine side of the turbocharger on the VA STI is directly affected by what's downstream. High back pressure means the turbine has to work harder to push exhaust out — which means less energy available to spin the compressor wheel. The Cobb downpipe dramatically reduces this back pressure, improving turbine efficiency and enabling the turbocharger to build boost faster.\u003c\/p\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/products\/9aab5861f2f6fcf41b92d6a2bdb10c2f.jpg?v=1697903468\" alt=\"Cobb Turbo Heat Shield - 2002-2007  Subaru WRX \/ 2004-2008 Forester XT \/ 2004-2019 STi\" style=\"float:right;max-width:47%;margin:0 0 16px 16px;border-radius:4px;\"\u003e\n\n\u003ch4\u003e\u003cstrong\u003e3-Inch Connection, Factory Flange Fitment\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe Cobb downpipe uses the factory turbocharger outlet flange on the VA STI and a 3-inch pipe to the factory cat-back connection point. Installation is bolt-in at the factory locations — factory O2 sensor bung is retained for correct ECU operation. An Accessport tune is required after installation — the factory map is not calibrated for the increased exhaust flow.\u003c\/p\u003e\n\n\u003cdiv style=\"clear:both\"\u003e\u003c\/div\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0737\/9029\/2257\/products\/edd7d999d62b8541e66abf716abbd51e.jpg?v=1697903468\" alt=\"Cobb Turbo Heat Shield - 2002-2007  Subaru WRX \/ 2004-2008 Forester XT \/ 2004-2019 STi\" style=\"float:left;max-width:47%;margin:0 16px 16px 0;border-radius:4px;\"\u003e\n\n\u003ch4\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003ePlatform: 2019-2021 Subaru WRX STI\u003c\/li\u003e\n  \u003cli\u003eMaterial: 304 Stainless Steel — durable, mandrel-bent throughout\u003c\/li\u003e\n  \u003cli\u003e3-inch piping — supports Stage 2 and Stage 3 power levels\u003c\/li\u003e\n  \n  \n  \u003cli\u003eRemoves downpipe catalyst — unlocks Stage 2 OTS tune capability\u003c\/li\u003e\n  \u003cli\u003eBolt-in at factory connection points — no chassis modification required\u003c\/li\u003e\n  \n  \u003cli\u003eAccessport tune required after installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv style=\"clear:both\"\u003e\u003c\/div\u003e\n\n\u003ch4\u003e\u003cstrong\u003eFitment Notes\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003ePlatform: 2019-2021 Subaru WRX STI\u003c\/li\u003e\n  \n  \u003cli\u003eAccessport tune required after installation — do not run on stock ECU calibration\u003c\/li\u003e\n  \u003cli\u003eCheck local emissions regulations before installation — this is a high-flow replacement\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eNOTE: Ships via UPS\/FedEx — signature required at delivery\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003e\u003cstrong\u003eStraight From Subispeed\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe Cobb downpipe is the key piece that takes the VA STI from Stage 1 to Stage 2 territory. Without replacing the factory downpipe, the Stage 2 OTS map is working against a restriction that limits what the turbocharger can actually deliver. This is the part that makes Stage 2 numbers real.\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eWhat's Included\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCobb Downpipe — 2019-2021 Subaru WRX STI\u003c\/li\u003e\n  \u003cli\u003eAll gaskets and hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003e\u003cstrong\u003eAbout Cobb Tuning\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eCobb Tuning has been developing performance parts and tuning solutions for Subaru vehicles since 1999. Based in Austin, Texas, Cobb built their reputation on the Accessport — the most widely used Subaru ECU tuning device on the market — and expanded that into a full ecosystem of intake, exhaust, drivetrain, and engine bay accessories engineered specifically for the platforms they support. Every Cobb product is developed in-house and validated on their own test vehicles before it reaches customers. Subispeed carries the full Cobb catalog because their engineering standards and platform-specific development process consistently produce parts that work exactly as advertised.\u003c\/p\u003e\n\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eYear\u003c\/th\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e2004-2008\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eForester\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e2002-2014\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eImpreza\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e2015-2021\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eWrx Sti\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"COBB","offers":[{"title":"Default Title","offer_id":45712957112406,"sku":"COBB512510","price":29.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/0411\/1190\/files\/ypy7fax12a8x_423766ac-dad1-4518-bb0c-b19ccf8c5b1e.jpg?v=1788786256","url":"https:\/\/truegearus.com\/products\/cobb-turbo-heat-shield-2002-2007-subaru-wrx-2004-2008-forester-xt-2004-2019-sti-gcab8q","provider":"TrueGear","version":"1.0","type":"link"}