{"product_id":"porsche-gt4-boxster-spyder-long-tube-street-headers","title":"Porsche 981 GT4 \/ Boxster Spyder \/ Clubsport SOUL Long Tube Street Headers","description":"\u003cp\u003eSoul Performance Products Long Tube Street Headers are built around large diameter, free flowing catalytic converters with long tube runners for maximum gains in power, throttle response, and flat-six engine tone out of the 3.8L engine. Add performance without throwing a check engine light!\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eDETAILS\u003c\/b\u003e\u003cbr\u003e\n\u003cb\u003e+\u003c\/b\u003e Fits all 981 Porsche GT4 \/ Boxster Spyder \/ Clubsport vehicles (2015-2016)\u003cbr\u003e\n\u003cb\u003e+\u003c\/b\u003e Added performance without a check engine light\u003cbr\u003e\n\u003cb\u003e+\u003c\/b\u003e Direct bolt on installation – instructions included\u003cbr\u003e\n\u003cb\u003e+\u003c\/b\u003e All Soul Performance Products are backed by a renowned \u003ca href=\"https:\/\/soulpp.com\/warranty\/\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eLifetime Warranty\u003c\/a\u003e for both street and track use\u003c\/p\u003e\n\u003ch2 style=\"text-align: center\"\u003e\u003cb\u003eDEVELOPMENT AND TESTING\u003c\/b\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400\"\u003eBy creating a unique application for the 981 platform, we’ve focused on sizing the runners (2”) and collectors correctly to extract maximum power from the 3.8L engine. We chose appropriately sized catalysts to flow enough power for sustained high RPM use – where the GT4 is at home. Don’t settle for smaller, cheaper catalysts when power and durability is concerned. Third party dyno testing on a Dyno Dynamics dynamometer revealed gains of 30 whp when paired with a tune, with 12 whp gains unlocked by Street Headers alone after the tune had been applied.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg class=\"aligncenter wp-image-2487 size-large\" src=\"https:\/\/soulpp.com\/wp-content\/uploads\/2026\/02\/GT4_Dyno.jpg\" alt=\"\" width=\"1024\" height=\"465\"\u003e\u003c\/p\u003e\n\u003ch2 style=\"text-align: center\"\u003e\u003cb\u003eHAND-CRAFTED CONSTRUCTION\u003c\/b\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400\"\u003eEach header is assembled out of T304L stainless steel and rigorously quality checked in-house.\u003c\/span\u003e\u003cspan style=\"font-weight: 400\"\u003e Proven design elements including port matched flanges, smooth radius primary tubing, and collectors that optimize the exhaust flow all work in conjunction to maximize power gains.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 style=\"text-align: center\"\u003e\u003cb\u003eBOLT ON AND GO\u003c\/b\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400\"\u003eEach product is tested in a fixture to ensure perfect fitment. Thorough installation instructions are included in the box for a straightforward install that can be performed by most DIY enthusiasts.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 style=\"text-align: center\"\u003e\u003cb\u003eBACKED BY LIFETIME WARRANTY\u003c\/b\u003e\u003c\/h2\u003e\n\u003cp\u003eEnjoy your SOUL exhaust components with confidence on both the street and track as they are covered for life! Our team will quickly work with you to resolve any issues or answer any questions that you may have.\u003c\/p\u003e\n\u003cp style=\"text-align: center\"\u003e\u003cb\u003eNOTE: \u003c\/b\u003e\u003cspan style=\"font-weight: 400\"\u003eThis product is not CARB certified and may not be legal for use on emissions controlled vehicles; intended for off road use only\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003c\/p\u003e\n\u003cdiv class=\"elfsight-app-dea9be92-41f8-46cf-9c45-0de0c71aab09\"\u003e\u003c\/div\u003e","brand":"SOUL PERFORMANCE PRODUCTS","offers":[{"title":"Default Title","offer_id":43480482709565,"sku":"POR.GT4.STH","price":4435.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0898\/5024\/files\/Soul-Performance-Products-981-GT4-Spyder-Long-Tube-Street-Headers-C-Product-Underside-2.jpg?v=1787011456","url":"https:\/\/www.euromotiv.com\/products\/porsche-gt4-boxster-spyder-long-tube-street-headers","provider":"Euromotiv","version":"1.0","type":"link"}