{"product_id":"hfe-bmw-b58-gen-2-downpipe-m240i-m340i-m440i-performance-upgrade","title":"HFE B58 Gen 2 OPF Heat Shield Decat Downpipe M240i, M340i \u0026 M440i Performance Upgrade","description":"\u003cdiv class=\"product-description\"\u003e\n\u003c!-- Info pills --\u003e\n\u003cdiv style=\"margin: 8px 0 14px; display: flex; flex-wrap: wrap; gap: 8px;\"\u003e\n\u003cspan style=\"background: #111827; color: #fff; padding: 6px 12px; border-radius: 999px; font-size: 12px;\"\u003eHigh Flow Engineering\u003c\/span\u003e \u003cspan style=\"background: #e5e7eb; color: #111827; padding: 6px 12px; border-radius: 999px; font-size: 12px;\"\u003eB58 Gen 2 OPF Downpipe\u003c\/span\u003e \u003cspan style=\"background: #e5e7eb; color: #111827; padding: 6px 12px; border-radius: 999px; font-size: 12px;\"\u003eExhaust Upgrade\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c!-- Short overview --\u003e\n\u003cdiv style=\"border: 1px solid #e5e7eb; border-radius: 12px; padding: 14px 16px; background: #ffffff; margin-bottom: 16px;\"\u003e\n\u003cp style=\"margin: 0;\"\u003eMaximise performance from your \u003cstrong\u003eB58 Gen 2 (B58TU) OPF-equipped BMW\u003c\/strong\u003e with the \u003cstrong\u003eHFE Heat-Shielded Decat Downpipe\u003c\/strong\u003e. Designed for G-Series models including the \u003cstrong\u003eM240i, M340i and M440i\u003c\/strong\u003e, this upgrade removes the restrictive factory catalytic converter and OPF system, significantly reducing exhaust backpressure and improving turbo efficiency, throttle response and overall power delivery.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- IMPORTANT DISCLAIMER --\u003e\n\u003cdiv style=\"border: 2px solid #dc2626; border-radius: 12px; padding: 14px 16px; background: #fef2f2; margin-bottom: 16px;\"\u003e\n\u003cp style=\"margin: 0 0 6px; font-weight: bold; color: #991b1b;\"\u003e⚠ IMPORTANT – EMISSIONS, OPF \u0026amp; ROAD USE NOTICE\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: 14px; color: #111827;\"\u003eThis product removes the factory catalytic converter and OPF\/GPF system and is intended for \u003cstrong\u003eoff-road or motorsport use only\u003c\/strong\u003e. It is \u003cstrong\u003enot UK road legal\u003c\/strong\u003e and will result in an MOT emissions failure. ECU tuning and OPF system coding are required after installation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- Key Features --\u003e\n\u003cdetails style=\"margin-bottom: 8px; border-radius: 12px; border: 1px solid #e5e7eb; background: #f9fafb; padding: 10px 14px;\"\u003e\n\u003csummary style=\"list-style: none; display: flex; align-items: center; justify-content: space-between; cursor: pointer; font-weight: 600;\"\u003e\u003cspan\u003eKey Features\u003c\/span\u003e\u003cspan style=\"font-size: 16px;\"\u003e＋\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv style=\"margin-top: 8px; font-size: 14px; color: #111827;\"\u003e\n\u003cul style=\"margin: 4px 0 0 18px;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eDecat + OPF Delete Design:\u003c\/strong\u003e Removes major exhaust restrictions for maximum flow.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Heat Shielding:\u003c\/strong\u003e Helps reduce engine bay temperatures and protect surrounding components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImproved Turbo Response:\u003c\/strong\u003e Faster spool and sharper throttle delivery.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced Backpressure:\u003c\/strong\u003e Allows the turbocharger to operate more efficiently.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Grade Stainless Steel Construction:\u003c\/strong\u003e Built for durability under extreme heat conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMandrel-Bent Design:\u003c\/strong\u003e Smooth internal flow for maximum exhaust efficiency.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c!-- Why Upgrade --\u003e\n\u003cdetails style=\"margin-bottom: 8px; border-radius: 12px; border: 1px solid #e5e7eb; background: #f9fafb; padding: 10px 14px;\"\u003e\n\u003csummary style=\"list-style: none; display: flex; align-items: center; justify-content: space-between; cursor: pointer; font-weight: 600;\"\u003e\u003cspan\u003eWhy Upgrade Your B58 Gen 2 OPF Downpipe?\u003c\/span\u003e\u003cspan style=\"font-size: 16px;\"\u003e＋\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv style=\"margin-top: 8px; font-size: 14px; color: #111827;\"\u003e\n\u003cul style=\"margin: 4px 0 0 18px;\"\u003e\n\u003cli\u003eOPF-equipped vehicles have significantly more exhaust restriction than non-OPF models.\u003c\/li\u003e\n\u003cli\u003eRemoving OPF and catalytic restriction dramatically improves exhaust flow.\u003c\/li\u003e\n\u003cli\u003eImproves turbo spool speed and engine efficiency.\u003c\/li\u003e\n\u003cli\u003eEnhances exhaust sound and turbo characteristics.\u003c\/li\u003e\n\u003cli\u003eEssential upgrade for Stage 2 and higher performance builds.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c!-- Technical Specifications --\u003e\n\u003cdetails style=\"margin-bottom: 8px; border-radius: 12px; border: 1px solid #e5e7eb; background: #f9fafb; padding: 10px 14px;\"\u003e\n\u003csummary style=\"list-style: none; display: flex; align-items: center; justify-content: space-between; cursor: pointer; font-weight: 600;\"\u003e\u003cspan\u003eTechnical Specifications\u003c\/span\u003e\u003cspan style=\"font-size: 16px;\"\u003e＋\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv style=\"margin-top: 8px; font-size: 14px; color: #111827;\"\u003e\n\u003cul style=\"margin: 4px 0 0 18px;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine:\u003c\/strong\u003e BMW B58 Gen 2 (B58TU)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e Decat + OPF delete\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e 304 stainless steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShielding:\u003c\/strong\u003e Integrated heat shield\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e Mandrel bent \u0026amp; TIG welded\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Direct replacement downpipe\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c!-- Compatibility --\u003e\n\u003cdetails style=\"margin-bottom: 8px; border-radius: 12px; border: 1px solid #e5e7eb; background: #f9fafb; padding: 10px 14px;\"\u003e\n\u003csummary style=\"list-style: none; display: flex; align-items: center; justify-content: space-between; cursor: pointer; font-weight: 600;\"\u003e\u003cspan\u003eVehicle Compatibility\u003c\/span\u003e\u003cspan style=\"font-size: 16px;\"\u003e＋\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv style=\"margin-top: 8px; font-size: 14px; color: #111827;\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBMW M240i\u003c\/strong\u003e – G42 (OPF models)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBMW M340i\u003c\/strong\u003e – G20 \/ G21 (OPF models)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBMW M440i\u003c\/strong\u003e – G22 \/ G23 \/ G26 (OPF models)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"margin: 8px 0 0; font-size: 12px; color: #374151;\"\u003e✔ B58 Gen 2 engine only (B58TU)\u003cbr\u003e✔ OPF \/ GPF equipped vehicles only\u003cbr\u003e✔ Not compatible with non-OPF or Gen 1 models\u003cbr\u003e✔ ECU tuning and OPF coding required\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c!-- Installation --\u003e\n\u003cdetails style=\"margin-bottom: 4px; border-radius: 12px; border: 1px solid #e5e7eb; background: #f9fafb; padding: 10px 14px;\"\u003e\n\u003csummary style=\"list-style: none; display: flex; align-items: center; justify-content: space-between; cursor: pointer; font-weight: 600;\"\u003e\u003cspan\u003eInstallation\u003c\/span\u003e\u003cspan style=\"font-size: 16px;\"\u003e＋\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv style=\"margin-top: 8px; font-size: 14px; color: #111827;\"\u003e\n\u003cul style=\"margin: 4px 0 0 18px;\"\u003e\n\u003cli\u003eRemove the factory OPF and catalytic downpipe assembly.\u003c\/li\u003e\n\u003cli\u003eInstall HFE downpipe using OEM mounting points.\u003c\/li\u003e\n\u003cli\u003eCheck alignment and secure all connections.\u003c\/li\u003e\n\u003cli\u003eECU remap and OPF coding required before driving.\u003c\/li\u003e\n\u003cli\u003eProfessional installation strongly recommended.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e","brand":"HFE","offers":[{"title":"Default Title","offer_id":56508559589762,"sku":"HFE-B58TU-DP-HS","price":459.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0751\/9381\/1260\/files\/HFEB58Gen2DownPipeHeatShieldM240iM340iM440i.webp?v=1774394513","url":"https:\/\/dcprestige.co.uk\/products\/hfe-bmw-b58-gen-2-downpipe-m240i-m340i-m440i-performance-upgrade","provider":"DC Prestige","version":"1.0","type":"link"}