{"product_id":"bmw-b58-g20-g29-toyota-gr-supra-a90-4-5-inch-catless-downpipe-2019","title":"BMW B58 G20\/G29 \u0026 Toyota GR Supra A90 4.5-Inch Catless Downpipe (2019+)","description":"\u003ch2\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eBMW B58 G20\/G29 \u0026amp; Toyota GR Supra A90 4.5-Inch Catless Downpipe (2019+)\u003c\/b\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"p3\"\u003e\u003cb\u003eMaximum Exhaust Flow. Enhanced Turbo Response. Unrestricted Performance.\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p4\"\u003eUnlock the full performance potential of your B58-powered vehicle with the \u003cspan class=\"s1\"\u003e\u003cb\u003eSimuFlow 4.5-Inch Catless Downpipe\u003c\/b\u003e\u003c\/span\u003e, designed for compatible BMW M340i, BMW Z4, and Toyota GR Supra A90 models equipped with the 3.0L B58 turbocharged inline-six engine.\u003c\/p\u003e\n\u003cp class=\"p4\"\u003eEngineered to eliminate the restriction of the factory catalytic converter, this high-flow downpipe provides a more direct exhaust path, helping improve turbocharger efficiency, throttle response, and overall exhaust performance.\u003c\/p\u003e\n\u003cp class=\"p4\"\u003eWhether you’re upgrading your B58 for track performance or building a high-horsepower competition setup, the SimuFlow 4.5-Inch Catless Downpipe is designed to support increased exhaust flow and demanding performance applications.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eKey Features\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan class=\"s1\"\u003e\u003cb\u003e4.5-Inch High-Flow Design:\u003c\/b\u003e\u003c\/span\u003e Large-diameter inlet engineered to reduce exhaust restriction and improve exhaust gas evacuation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"s1\"\u003e\u003cb\u003eCatless Configuration:\u003c\/b\u003e\u003c\/span\u003e Eliminates the factory catalytic converter for maximum exhaust flow.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"s1\"\u003e\u003cb\u003eEnhanced Turbo Response:\u003c\/b\u003e\u003c\/span\u003e Reduced exhaust backpressure can support faster turbo spool and sharper throttle response.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"s1\"\u003e\u003cb\u003eAggressive Exhaust Sound:\u003c\/b\u003e\u003c\/span\u003e Produces a louder, deeper exhaust note with enhanced turbocharger sound.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"s1\"\u003e\u003cb\u003ePerformance Tuning Potential:\u003c\/b\u003e\u003c\/span\u003e Designed to complement performance ECU calibrations and supporting engine modifications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"s1\"\u003e\u003cb\u003eB58 Platform Compatibility:\u003c\/b\u003e\u003c\/span\u003e Designed for compatible BMW G-Series and Toyota GR Supra A90 applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003ePerformance Benefits\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p3\"\u003e\u003cb\u003eMaximum Exhaust Flow\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p4\"\u003eThe catless design removes the factory catalytic converter restriction, allowing exhaust gases to exit the turbocharger more efficiently. This helps reduce backpressure and supports improved performance, particularly on modified or tuned engines.\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e\u003cb\u003eImproved Turbocharger Efficiency\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p4\"\u003eA less restrictive exhaust path can help the turbocharger operate more efficiently under increased boost pressure and demanding driving conditions.\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e\u003cb\u003eAggressive B58 Exhaust Note\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p4\"\u003eExperience a deeper, more pronounced exhaust tone with enhanced turbocharger sound, bringing out the distinctive character of the B58 inline-six engine.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eVehicle Compatibility\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan class=\"s1\"\u003e\u003cb\u003eBMW M340i:\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e G20 Chassis — 2020+\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"s1\"\u003e\u003cb\u003eBMW Z4 M40i:\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e G29 Chassis — 2019+\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"s1\"\u003e\u003cb\u003eToyota GR Supra 3.0:\u003c\/b\u003e\u003c\/span\u003e A90\/A91 Platform — 2020+\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"s1\"\u003e\u003cb\u003eEngine:\u003c\/b\u003e\u003c\/span\u003e 3.0L B58 Turbocharged Inline-Six\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"s1\"\u003e\u003cb\u003eConfiguration:\u003c\/b\u003e\u003c\/span\u003e 4.5-Inch Catless Downpipe\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p4\"\u003e\u003cb\u003eNote:\u003c\/b\u003e Fitment may vary by production year, engine revision, drivetrain configuration, and emissions equipment. Confirm compatibility before purchasing.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eImportant Information\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eFor competition\/off-road use only where legally permitted.\u003c\/b\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003eThis product removes the factory catalytic converter and is not legal for use on pollution-controlled vehicles on public roads in the United States.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended.\u003c\/li\u003e\n\u003cli\u003eECU calibration may be required depending on the vehicle’s configuration.\u003c\/li\u003e\n\u003cli\u003eInstallation may trigger a check engine light.\u003c\/li\u003e\n\u003cli\u003eVerify exact vehicle compatibility before purchasing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eShipping \u0026amp; Delivery\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p2\"\u003e\u003cb\u003eEstimated Delivery Time: 15 Days\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eYour SimuFlow High-Flow Catted Downpipe is carefully prepared and shipped to ensure it arrives safely and in excellent condition.\u003c\/p\u003e\n\u003cp class=\"p3\"\u003ePlease allow approximately \u003cspan class=\"s1\"\u003e\u003cb\u003e15 days for delivery\u003c\/b\u003e\u003c\/span\u003e from the date your order is placed. Delivery times may vary slightly depending on your location and shipping conditions.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":47599558099116,"sku":null,"price":250.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/1475\/0636\/files\/850B4A60-46D8-4E91-B022-18B00048C896.png?v=1791606364","url":"https:\/\/simuflowexhaustco.com\/products\/bmw-b58-g20-g29-toyota-gr-supra-a90-4-5-inch-catless-downpipe-2019","provider":"My Store","version":"1.0","type":"link"}