{"type":"firestarter.listing","listing":{"id":"lst_3aHfIu-Q","product_name":"400 Cell Catted Down Pipes For Porsche 992 GT3 / GT3 RS","category":"Motor Vehicle Exhaust","description":"Porsche 992 GT3 / GT3 RS – EPA-Compliant 400 Cell Catted Downpipes\nEngineered for the 4.0L Naturally Aspirated Flat-Six • High-Flow • Compliant • \n\nIntroducing Our NEW 400 Cell EPA-Compliant Downpipes for 992 GT3\nThe Porsche 992 GT3 and GT3 RS are motorsport-derived machines built around a 9,000 RPM naturally aspirated flat-six. While the factory catalysts prioritize restriction and sound control, our NEW EPA-compliant 400 cell high-flow catted downpipes are engineered to reduce exhaust backpressure, improve high-RPM breathing, and enhance the engine’s unmistakable motorsport character — all while maintaining emissions compliance standards.\nThis upgrade preserves the integrity of the GT3 platform while allowing the engine to operate with greater efficiency and clarity at redline.\n\nWhy Upgrade to 400 Cell?\n\n\nEPA-Compliant 400 Cell High-Flow Catalysts: Increased exhaust efficiency while maintaining compliance standards.\n\nImproved High-RPM Flow: Reduced restriction enhances top-end breathing and throttle precision.\n\nEnhanced Motorsport Character: Sharper, more defined exhaust note at elevated RPM.\n\nTrack-Focused Performance: Optimized for spirited driving and circuit use without sacrificing reliability.\n\n\nEngineering & Performance\n\n\nOptimized Flow Architecture: Designed to minimize 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 during sustained high-RPM operation.\n\nDirect OEM Bolt-On Installation: Utilizes factory mounting locations for seamless fitment.\nEngineered to Pair with Valvetronic Exhaust Systems\n\n\nSound Character\n\n\nStock Exhaust + Downpipes: Noticeable increase in clarity and presence with improved high-frequency resonance.\n\nValvetronic Exhaust + Downpipes: Maximum transformation — sharper transitions, heightened induction character, and a more race-inspired signature.\n\n\nConstruction & Durabilit","images":["https://cdn.shopify.com/s/files/1/0024/4898/2060/files/DSC07855_ShopifyCustomSize.jpg?v=1784213573","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/DSC07863_ShopifyCustomSize.jpg?v=1784213573","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/DSC07882_ShopifyCustomSize.jpg?v=1784213573","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/DSC07859_ShopifyCustomSize.jpg?v=1784213573","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/DSC07869_ShopifyCustomSize.jpg?v=1784213573","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/DSC07915_ShopifyCustomSize.jpg?v=1784213573","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/DSC07910_ShopifyCustomSize.jpg?v=1784213573","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/DSC07922_ShopifyCustomSize.jpg?v=1784213573","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/DSC07875_ShopifyCustomSize.jpg?v=1784213573","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/DSC07851_ShopifyCustomSize.jpg?v=1784213573","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/DSC07888_ShopifyCustomSize.jpg?v=1784213573","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/DSC07898_ShopifyCustomSize.jpg?v=1784213573"],"price":4499.99,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-07-16T16:00:45.277Z"},"share_url":"https://firestarter.network/l/lst_3aHfIu-Q","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_3aHfIu-Q' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy 400 Cell Catted Down Pipes For Porsche 992 GT3 / GT3 RS' and a budget_max comfortably above $4499.99 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."]}}