{"product_id":"turbo-downpipe-exhaust-for-subaru-gt35-gt35r-3-inch","title":"Turbo Downpipe Exhaust for Subaru GT35 \u0026 GT35R 3 Inch","description":"\u003ch3\u003e\u003cstrong\u003eFLASHARK Turbo Downpipe Exhaust for Subaru GT35 \u0026amp; GT35R 3 Inch\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eFlashark's GT35\/GT35R downpipe is engineered to replace the restrictive factory downpipe on Subaru EJ-series engines running a Garrett GT35 or GT35R turbocharger upgrade. Positioned between the turbocharger turbine outlet and the exhaust system, this 3-inch high-flow downpipe eliminates the factory bottleneck—reducing backpressure, improving turbo spool response, and unlocking the power your GT35 turbo is capable of delivering.\u003c\/p\u003e\n\u003cp\u003eBuilt from stainless steel with computerized mandrel bends, TIG-welded joints, and a CNC-machined flange, this downpipe is designed for 350–450 WHP builds where every bit of exhaust flow matters.\u003c\/p\u003e\n\u003cp\u003eNote: ECU tuning is required after installation. This downpipe is intended for off-road \/ track use. Check local emissions regulations before purchase.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDirect Fit For:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSubaru WRX STI (EJ257) — 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021\u003c\/li\u003e\n\u003cli\u003eSubaru WRX (EJ255) — 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eRequires:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eGarrett GT35 or GT35R turbocharger with T3 turbine housing flange.\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eNot compatible with:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eStock VF-series or TD04 turbochargers (different flange pattern).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNot sure about fitment?\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eEmail us at\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"mailto:support@flasharkracing.com\" rel=\"noopener noreferrer\" target=\"_blank\"\u003esupport@flasharkracing.com\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003ewith your year, model, and turbo specs — we'll confirm within 24 hours.\u003c\/p\u003e\n\u003ch3\u003e\n\u003cspan class=\"magic-4\"\u003eFeatures:\u003c\/span\u003e\u003cbr\u003e\u003cspan class=\"magic-5\"\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cspan class=\"magic-5\"\u003e1. Improve Engine Output and Efficiency, Give you extra HPs, and increases torque\u003cbr\u003e2. Large diameter and free flow tubing for unrestricted flow, Making the exhaust air flow smooth, Designed for high-performance racing\u003cbr\u003e3. Made of High-Quality Stainless Steel with Computerized Mandrel-Bends\u003cbr\u003e4. All joints are TIG welded to prevent cracking and wear\u003cbr\u003e5. CNC Machine Flange for MAX Strength and Durability\u003cbr\u003e6. Flanges chrome plated for corrosion resistance\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eWhat Does This Downpipe Do?\u003c\/h3\u003e\n\u003cp\u003eThe downpipe is the critical exhaust section between your turbocharger's turbine wheel and the rest of the exhaust system. The factory EJ257 downpipe is 2.5\" with a restrictive catalytic converter—it's the single biggest exhaust bottleneck on a GT35-powered build.\u003c\/p\u003e\n\u003cp\u003eBy replacing it with Flashark's full 3\" high-flow downpipe:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackpressure drops significantly\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e→ turbo spools faster, holds boost longer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExhaust gas temperature (EGT) drops\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e→ safer for high-boost tuning\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMid-range torque improves\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e→ the GT35's sweet spot becomes accessible\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower gains:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e150–200 WHP over stock (GT35 + downpipe + proper tune)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eDesigned for:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eGarrett GT35 (standard bearing) and GT35R (ball-bearing) turbochargers with T3 turbine housing flange.\u003c\/p\u003e\n\u003ch4\u003eQ1: What's the difference between GT35 and GT35R?\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eGT35 uses standard journal bearings; GT35R uses ball-bearing cartridges for faster spool and higher RPM capability. Both share the same T3 turbine flange, so this downpipe fits both.\u003c\/p\u003e\n\u003ch4\u003eQ2: Catless or catted?\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThis downpipe is catless (no catalytic converter) for maximum flow. If you need a catted version for street legality, contact us — we can advise on high-flow cat options.\u003c\/p\u003e\n\u003ch4\u003eQ3: Do I need supporting mods?\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eFor a safe 350–450WHP build: upgraded fuel pump (Walbro 255LPH+), 1000cc+ injectors, front-mount intercooler, blow-off valve, and standalone ECU tuning are strongly recommended.\u003c\/p\u003e\n\u003ch4\u003eQ4: Can I install this myself?\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eYes, if you have mechanical experience and proper tools. Plan 3–5 hours. Subaru exhaust hardware seizes easily — penetrating oil and heat are your friends. If unsure, have a shop install it.\u003c\/p\u003e\n\u003ch4\u003eQ5: What exhaust does this connect to?\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e3\" outlet mates to any 3\" cat-back exhaust. If your exhaust is 2.5\", you'll need an adapter or to upgrade your cat-back to 3\".\u003c\/p\u003e\n\u003ch4\u003eQ6: Will this trigger a Check Engine Light?\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ePossibly — removing the cat and changing the O2 sensor placement can trigger codes. A tuned ECU can disable or adjust for this. The included O2 bung supports the installation of a wideband sensor for proper tuning.\u003c\/p\u003e\n\u003ch4\u003eQ7: How does this affect exhaust sound?\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eCatless + larger diameter = more aggressive. You'll hear more turbo spool, blow-off valve, and deeper boxer rumble. Volume increase is noticeable but not obnoxious with a quality cat-back.\u003c\/p\u003e\n\u003ch4\u003eQ8: Is this worth it over a cheaper downpipe?\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eCheap downpipes often use thin 409 stainless (rusts), have poor weld quality (cracks under heat cycling), or incorrect flange geometry (exhaust leaks). Flashark uses real T-304, full TIG welds, and CNC flanges — it's built to last.\u003c\/p\u003e","brand":"Flashark","offers":[{"title":"Default Title","offer_id":51797499707678,"sku":"FLES08380","price":96.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/7171\/1262\/files\/Turbo-Downpipe-Exhaust-for-Subaru-GT35-GT35R-3-Inch-Flashark-1685353675_7a2e1c0f-fdf6-4b44-aeab-63e6902ca26f.jpg?v=1782570164","url":"https:\/\/platinumhpsolutions.myshopify.com\/fr\/products\/turbo-downpipe-exhaust-for-subaru-gt35-gt35r-3-inch","provider":"Platinum High Performance Solutions, LLC.","version":"1.0","type":"link"}