{"product_id":"bmw-b58-gen-1-f-series-m340i-m440i-m240i-catless-catted-downpipe","title":"BMW B58 Gen 1 F-Series M340i\/M440i\/M240i Catless\/Catted Downpipe","description":"\u003ch2\u003eBMW B58 Gen 1 F-Series M140i\/M240i\/340i\/440i Catless\/Catted Downpipe\u003c\/h2\u003e\n\u003cp\u003eUnlock the full performance potential of your BMW B58-powered F-Series platform with this Catless or High-Flow Catted Downpipe — engineered to maximise exhaust flow, improve turbocharger efficiency, and unleash the true performance and sound of BMW's renowned turbocharged inline-six.\u003c\/p\u003e\n\u003cp\u003eDesigned specifically for the B58 Gen 1 engine, this high-flow downpipe replaces the restrictive factory catalytic converter, significantly reducing exhaust backpressure and allowing the turbocharger to spool faster and operate more efficiently. Available in both Catless and High-Flow Catted configurations, this upgrade delivers sharper throttle response, increased power potential, enhanced turbo acoustics, and a noticeably more aggressive exhaust note.\u003c\/p\u003e\n\u003cp\u003eConstructed from premium T304 stainless steel with precision TIG welding and mandrel-bent tubing, this downpipe is built to withstand extreme exhaust temperatures while providing outstanding durability and corrosion resistance. Its direct bolt-on design ensures straightforward installation using the factory mounting locations.\u003c\/p\u003e\n\u003cp\u003eWhether paired with the factory exhaust system or a complete aftermarket setup, this Catless\/Catted Downpipe is one of the most effective performance upgrades available for the BMW B58 Gen 1 platform.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003ch3\u003eCatless or High-Flow Catted Configurations\u003c\/h3\u003e\n\u003cp\u003eAvailable in either Catless form for maximum exhaust flow and performance, or with a high-flow catalytic converter for a more refined exhaust note and improved emissions compliance.\u003c\/p\u003e\n\u003ch3\u003ePremium T304 Stainless Steel Construction\u003c\/h3\u003e\n\u003cp\u003eManufactured from corrosion-resistant T304 stainless steel for exceptional durability and heat resistance.\u003c\/p\u003e\n\u003ch3\u003eIncreased Exhaust Flow\u003c\/h3\u003e\n\u003cp\u003eReduces exhaust backpressure, allowing the turbocharger to spool faster and operate more efficiently.\u003c\/p\u003e\n\u003ch3\u003eMandrel-Bent Tubing\u003c\/h3\u003e\n\u003cp\u003eMaintains unrestricted exhaust flow and consistent pipe diameter throughout the system.\u003c\/p\u003e\n\u003ch3\u003ePrecision TIG Welded\u003c\/h3\u003e\n\u003cp\u003eEngineered for superior strength and long-term reliability in demanding performance applications.\u003c\/p\u003e\n\u003ch3\u003eDirect Bolt-On Fitment\u003c\/h3\u003e\n\u003cp\u003eDesigned specifically for BMW B58 Gen 1 F-Series vehicles using factory mounting locations.\u003c\/p\u003e\n\u003ch2\u003ePerformance Benefits\u003c\/h2\u003e\n\u003cp\u003e• Increased horsepower and torque potential\u003cbr\u003e• Faster turbo spool\u003cbr\u003e• Improved throttle response\u003cbr\u003e• Reduced exhaust backpressure\u003cbr\u003e• Enhanced turbocharger efficiency\u003cbr\u003e• Increased turbo whistle and induction acoustics\u003cbr\u003e• Ideal foundation for Stage 1, Stage 2, and higher-performance builds\u003c\/p\u003e\n\u003cp\u003ePerformance gains may vary depending on ECU calibration, fuel quality, and supporting modifications.\u003c\/p\u003e\n\u003ch2\u003eSound Characteristics\u003c\/h2\u003e\n\u003ch3\u003eCatless Version\u003c\/h3\u003e\n\u003cp\u003e• Deeper and more aggressive exhaust tone\u003cbr\u003e• Increased turbo spool and whistle acoustics\u003cbr\u003e• Louder cold starts\u003cbr\u003e• Enhanced pops and burbles (when tuned)\u003cbr\u003e• Maximum exhaust flow and performance\u003c\/p\u003e\n\u003ch3\u003eHigh-Flow Catted Version\u003c\/h3\u003e\n\u003cp\u003e• Sportier and more refined exhaust note\u003cbr\u003e• Increased turbo spool acoustics\u003cbr\u003e• Improved exhaust volume without excessive harshness\u003cbr\u003e• Excellent balance between performance and everyday drivability\u003c\/p\u003e\n\u003ch2\u003eVehicle Fitment\u003c\/h2\u003e\n\u003cp\u003eBMW F20\/F21 M140i (2016–2019)\u003cbr\u003eBMW F22\/F23 M240i (2016–2021)\u003cbr\u003eBMW F30\/F31\/F34 340i (2016–2019)\u003cbr\u003eBMW F32\/F33\/F36 440i (2016–2020)\u003c\/p\u003e\n\u003cp\u003e3.0L Turbocharged B58 Gen 1 Engine\u003c\/p\u003e\n\u003ch2\u003ePlease Note\u003c\/h2\u003e\n\u003cp\u003eProfessional installation is strongly recommended.\u003c\/p\u003e\n\u003cp\u003ePerformance gains will vary depending on vehicle condition, fuel quality, ECU calibration, and supporting modifications.\u003c\/p\u003e\n\u003cp\u003eThe Catless version is intended for off-road and motorsport use only.\u003c\/p\u003e\n\u003cp\u003eECU tuning is recommended to maximise performance and prevent potential check engine lights associated with catalyst removal.\u003c\/p\u003e\n\u003ch2\u003eWhy Choose Proven Performance Parts\u003c\/h2\u003e\n\u003cp\u003eWe specialise in high-performance parts for European vehicles — including Volkswagen GTI \u0026amp; R models, Audi S\/RS platforms, and BMW M vehicles. Every product we offer is carefully selected for its quality, fitment, and real-world performance — tested by enthusiasts, for enthusiasts.\u003c\/p\u003e","brand":"Proven Performance Parts","offers":[{"title":"BMW F20\/F21 M140i (2016–2019) \/ Catted Downpipe (200 CEL)","offer_id":52425272885530,"sku":null,"price":590.0,"currency_code":"AUD","in_stock":true},{"title":"BMW F20\/F21 M140i (2016–2019) \/ Catless Downpipe","offer_id":52425272918298,"sku":null,"price":510.0,"currency_code":"AUD","in_stock":true},{"title":"BMW F22\/F23 M240i (2016–2021) \/ Catted Downpipe (200 CEL)","offer_id":52425272951066,"sku":null,"price":590.0,"currency_code":"AUD","in_stock":true},{"title":"BMW F22\/F23 M240i (2016–2021) \/ Catless Downpipe","offer_id":52425272983834,"sku":null,"price":510.0,"currency_code":"AUD","in_stock":true},{"title":"BMW F30\/F31\/F34 340i (2016–2019) \/ Catted Downpipe (200 CEL)","offer_id":52425273016602,"sku":null,"price":590.0,"currency_code":"AUD","in_stock":true},{"title":"BMW F30\/F31\/F34 340i (2016–2019) \/ Catless Downpipe","offer_id":52425273049370,"sku":null,"price":510.0,"currency_code":"AUD","in_stock":true},{"title":"BMW F32\/F33\/F36 440i (2016–2020) \/ Catted Downpipe (200 CEL)","offer_id":52425273082138,"sku":null,"price":590.0,"currency_code":"AUD","in_stock":true},{"title":"BMW F32\/F33\/F36 440i (2016–2020) \/ Catless Downpipe","offer_id":52425273114906,"sku":null,"price":510.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0951\/1177\/4490\/files\/210_55f6dcb7-f17e-473e-bd1c-fbfadb82a7f3.png?v=1783061275","url":"https:\/\/provenperformanceparts.com.au\/products\/bmw-b58-gen-1-f-series-m340i-m440i-m240i-catless-catted-downpipe","provider":"Proven Performance Parts","version":"1.0","type":"link"}