{"type":"firestarter.listing","listing":{"id":"lst_7uA_GfNK","product_name":"Soul Performance Porsche 981 Boxster / Cayman SOUL Valved Exhaust System","category":"Exhaust","description":"Porsche fits a restrictive and bulky exhaust system onto the 981 Cayman / Boxster, robbing it of its natural power and sound. By reducing weight and implementing a valve system that offers a true night and day difference, you will instantly gain the response, character and sound that your car deserves. While in quiet mode with the valves closed you will have a refined, sporty sound with no drone and retain the ability to quietly enter and exit your neighborhood without annoying those around you thanks to the high quality mufflers. Unlock the valves and you’ll be ready to turn off the radio, roll down the windows and hit your favorite back roads or go hard at the track.\nDETAILS+  Fits all Porsche 981 Cayman / Boxster vehicles (2013-2016)+  Direct bolt on installation – instructions included+  Choose from a variety of tip styles and finishes  – or customize your own!+  Valve controller kit included – necessary for cars without PSE and optional for cars with PSE to provide manual valve override+  All Soul Performance Products components are backed by a renowned Lifetime Warranty for both street and track use\nDescription\nDEVELOPMENT:  We wanted to be certain that our system offered a superior spectrum of sound – Cup car inspired with valves open but with a refined, no droning tone with valves closed. The SOUL mufflers practically eliminate droning – even with aftermarket headers the sound is reserved in the cabin with valves closed!\nCONSTRUCTION:  Each system is made from mandrel bent T304L stainless steel tubing (featuring 2.5″ OD over axle pipes) and features mufflers with fortified casings in the interest of durability. With valves closed the exhaust gasses are routed into the SOUL muffler, which is packed with high quality sound deadening material designed to withstand abuse and not blow out over time. The mufflers are incredibly effective at minimizing drone. Exhaust gasses make their way through the muffler and out through perforations into the outer piping. With ","images":["https://cdn.shopify.com/s/files/1/0024/4898/2060/files/Soul-Performance-Products-981-Valved-Exhaust-System-Product-Brushed-Straight-Cut-Single-Wall-Tips.webp?v=1772221890","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/Soul-Performance-Products-981-Valved-Exhaust-System-Product-Satin-Black-Straight-Cut-Single-Wall-Tips.webp?v=1772221890","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/IMG_9535.webp?v=1772221890","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/IMG_8432-510x323_0d6fb797-0bd1-4b00-a42f-34fccf393230.webp?v=1772221890","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/IMG_8436-510x277_154068a6-9217-47a7-beca-2b6dd010bec9.webp?v=1772221890","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/IMG_8438-510x361_4a0b79b7-18d5-43ab-a943-a8f071bbd8f0.webp?v=1772221890","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/IMG_8446-510x315_0e2afa65-c70e-4ea2-b960-cc02f3766ccf.webp?v=1772221890","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/IMG_9541.webp?v=1772221890","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/SOUL-Slash-Cut-Single-Wall-Tips-Signature-Satin-Finish_6e3ecce5-8a5c-4210-bfef-1f2f01666b2d.webp?v=1772221890","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/SOUL-Brushed-Straight-Cut-Single-Wall-Tips.webp?v=1772221890","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/SOUL-Chrome-Tips-1.webp?v=1772221890","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/SOUL-Chrome-Tips-510x340_4f0b34bf-1409-4d83-8dca-b99ea3d32c05.webp?v=1772221890","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/SOUL-Matte-Black-Slash-Cut-Single-Wall-Tips-510x340.webp?v=1772221890","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/SOUL-Matte-Black-Straight-Cut-Single-Wall-Tips.webp?v=1772221890","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/SOUL-Straight-Cut-Single-Wall-Tips-510x340_f4576cab-2672-4508-a80d-ee7bf3f41209.webp?v=1772221890","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/Soul-Performance-Products-981-Street-Package-Installed-2-510x340.webp?v=1772221890","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/Soul-Performance-Products-981-Valved-Exhaust-System-Package-510x340.webp?v=1772221890","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/Soul-Performance-Products-981-Valved-Exhaust-System-Slash-Cut-Single-Wall-Install--510x340.webp?v=1772221890","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/Valve-Controller-Kit-510x340_5b8799b3-ed80-486e-96bf-74a8bf996975.webp?v=1772221832"],"price":4135,"currency":"USD","in_stock":true,"inventory_qty":99990,"dynamic_pricing":false,"listed_at":"2026-06-20T14:56:21.419Z"},"share_url":"https://firestarter.network/l/lst_7uA_GfNK","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 <your Firestarter API key>","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_7uA_GfNK' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Soul Performance Porsche 981 Boxster / Cayman SOUL Valved Exhaust System' and a budget_max comfortably above $4135.00 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."]}}