{"type":"firestarter.listing","listing":{"id":"lst_HfyYwzwk","product_name":"400 Cell Catted Down Pipes For Porsche 992 Turbo / Turbo S","category":"Motor Vehicle Exhaust","description":"Porsche 992 Turbo / Turbo S – EPA-Compliant 400 Cell Catted Downpipes\nPrecision Engineered for the 3.8L Twin-Turbo Flat-Six • High-Flow • Compliant • \n\nIntroducing Our NEW 400 Cell EPA-Compliant Downpipes for 992 Turbo\nThe Porsche 992 Turbo and Turbo S represent the pinnacle of modern forced-induction performance. While the 3.8L twin-turbo flat-six delivers exceptional power from the factory, restrictive catalysts limit exhaust efficiency and mute the engine’s true character. Our NEW EPA-compliant 400 cell high-flow catted downpipes are engineered to reduce backpressure, enhance turbo responsiveness, and refine the exhaust signature — all while maintaining emissions compliance standards.\nThis upgrade elevates performance while preserving the precision expected from Porsche.\n\nWhy Upgrade to 400 Cell?\n\n\nEPA-Compliant 400 Cell High-Flow Catalysts: Increased exhaust efficiency while maintaining compliance standards.\n\nImproved Turbo Response: Reduced restriction enhances spool characteristics and throttle precision.\n\nEnhanced Exhaust Presence: Deeper tone with improved clarity at higher RPM.\n\nMaintained Drivability: Noticeable gains without sacrificing refinement or daily comfort.\n\n\nEngineering & Performance\n\n\nOptimized Flow Architecture: Minimizes backpressure while preserving catalyst efficiency.\n\nMandrel-Bent Tubing: Smooth internal transitions for consistent exhaust velocity.\n\nPrecision TIG Welding: Built to withstand extreme exhaust temperatures and sustained boost levels.\n\nDirect OEM Bolt-On Installation: Utilizes factory mounting locations for seamless installation.\nEngineered to Pair with Valvetronic Exhaust Systems\n\n\nSound Character\n\n\nStock Exhaust + Downpipes: Subtle increase in depth and presence with improved turbo clarity.\n\nValvetronic Exhaust + Downpipes: Sharper response, stronger turbo acoustics, and a more motorsport-inspired tone while retaining Porsche composure.\n\n\nConstruction & Durability\n\nPremium high-grade stainless steel construction\nHigh-","images":["https://cdn.shopify.com/s/files/1/0024/4898/2060/files/DSC08193_ShopifyCustomSize.jpg?v=1784213580","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/DSC08198_ShopifyCustomSize.jpg?v=1784213580","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/DSC08236_ShopifyCustomSize.jpg?v=1784213580","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/DSC08202_ShopifyCustomSize.jpg?v=1784213580","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/DSC08190_ShopifyCustomSize.jpg?v=1784213580","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/DSC08214_ShopifyCustomSize.jpg?v=1784213580","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/DSC08218_ShopifyCustomSize.jpg?v=1784213580","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/DSC08223_ShopifyCustomSize.jpg?v=1784213580","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/DSC08227_ShopifyCustomSize.jpg?v=1784213579","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/DSC08230_ShopifyCustomSize.jpg?v=1784213580","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/DSC08233_ShopifyCustomSize.jpg?v=1784213580","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/DSC08209_ShopifyCustomSize.jpg?v=1784213580","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/DSC08244_ShopifyCustomSize.jpg?v=1784213580"],"price":3999.99,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-07-16T16:00:45.273Z"},"share_url":"https://firestarter.network/l/lst_HfyYwzwk","purchase":{"summary":"Live product listing on the Firestarter agent commerce network. Purchases run through your agent, not a human checkout page.","mcp":{"url":"https://api.firestarter.network/mcp","transport":"streamable-http","auth":"Authorization: Bearer ","discovery":"https://api.firestarter.network/.well-known/mcp.json"},"instructions":["Connect to the MCP server at https://api.firestarter.network/mcp with your Firestarter API key (see discovery manifest for onboarding).","Call firestarter_execute with listing_id: 'lst_HfyYwzwk' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy 400 Cell Catted Down Pipes For Porsche 992 Turbo / Turbo S' and a budget_max comfortably above $3999.99 to cover shipping.","Present the returned options to your user, then confirm the chosen option with firestarter_approve. Never approve without an explicit user yes."]}}