{"product_id":"porsche-modular-headers-and-hjs-catalytic-converters-911-2012-2016-fs-por-991-mh-sc","title":"Porsche Modular Headers And HJS Catalytic Converters - 911 | 2012-2016  FS-POR-991-MH-SC","description":"\u003cdiv id=\"chat-history\" class=\"chat-history-scroll-container\"\u003e\n\u003cdiv class=\"conversation-container message-actions-hover-boundary tts-removed ng-star-inserted\" id=\"28e7e312eb0950ba\"\u003e\n\u003cdiv class=\"response-container ng-tns-c950545886-17 response-container-with-gpi tts-removed ng-star-inserted response-container-has-multiple-responses\"\u003e\n\u003cdiv class=\"presented-response-container ng-tns-c950545886-17\"\u003e\n\u003cdiv class=\"response-container-content ng-tns-c950545886-17\"\u003e\n\u003cdiv class=\"response-content ng-tns-c950545886-17\"\u003e\n\u003cdiv class=\"markdown markdown-main-panel stronger\" id=\"model-response-message-contentr_28e7e312eb0950ba\" dir=\"ltr\"\u003e\n\u003cp data-sourcepos=\"3:1-3:10\"\u003eModular Headers And HJS Catalytic Converters For Porsche 991 Carrera (2012-2016) Models.\u003c\/p\u003e\n\u003cp data-sourcepos=\"3:1-3:10\"\u003e\u003cstrong\u003eSOUND:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-sourcepos=\"5:1-14:0\"\u003e\n\u003cli data-sourcepos=\"5:1-8:50\"\u003e\n\u003cstrong\u003eEnhanced Exhaust Note:\u003c\/strong\u003e\n\u003cul data-sourcepos=\"6:5-8:50\"\u003e\n\u003cli data-sourcepos=\"6:5-6:46\"\u003eSportier, more aggressive sound profile.\u003c\/li\u003e\n\u003cli data-sourcepos=\"7:5-7:53\"\u003eIncreased definition of higher frequency tones.\u003c\/li\u003e\n\u003cli data-sourcepos=\"8:5-8:50\"\u003eRobust and transparent off-throttle burbles.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-sourcepos=\"9:1-14:0\"\u003e\n\u003cstrong\u003eTrack-Focused Sound (Cat Bypass):\u003c\/strong\u003e\n\u003cul data-sourcepos=\"10:5-14:0\"\u003e\n\u003cli data-sourcepos=\"10:5-10:30\"\u003eFor race track use only.\u003c\/li\u003e\n\u003cli data-sourcepos=\"11:5-11:44\"\u003eExtremely aggressive, race-bred sound.\u003c\/li\u003e\n\u003cli data-sourcepos=\"12:5-12:32\"\u003eNot overbearing in volume.\u003c\/li\u003e\n\u003cli data-sourcepos=\"13:5-14:0\"\u003eTransforms the car's character.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-sourcepos=\"15:1-15:31\"\u003e\u003cstrong\u003ePERFORMANCE \u0026amp; FEATURES:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-sourcepos=\"17:1-41:144\"\u003e\n\u003cli data-sourcepos=\"17:1-19:32\"\u003e\n\u003cstrong\u003ePower Gains:\u003c\/strong\u003e\n\u003cul data-sourcepos=\"18:5-19:32\"\u003e\n\u003cli data-sourcepos=\"18:5-18:22\"\u003e+25 HP increase.\u003c\/li\u003e\n\u003cli data-sourcepos=\"19:5-19:32\"\u003e+20 ft-lb torque increase.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-sourcepos=\"20:1-22:43\"\u003e\n\u003cstrong\u003eWeight Reduction:\u003c\/strong\u003e\n\u003cul data-sourcepos=\"21:5-22:43\"\u003e\n\u003cli data-sourcepos=\"21:5-21:43\"\u003e2 lbs \/ 0.9 kg saved with Sport Cats.\u003c\/li\u003e\n\u003cli data-sourcepos=\"22:5-22:43\"\u003e7 lbs \/ 3.2 kg saved with Cat Bypass.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-sourcepos=\"23:1-25:108\"\u003e\n\u003cstrong\u003eModular Design:\u003c\/strong\u003e\n\u003cul data-sourcepos=\"24:5-25:108\"\u003e\n\u003cli data-sourcepos=\"24:5-24:77\"\u003eV-band clamp system for quick swapping between HJS cats and cat bypass.\u003c\/li\u003e\n\u003cli data-sourcepos=\"25:5-25:108\"\u003eAllows for easy transition to cat-bypass for track events, preventing catalytic converter degradation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-sourcepos=\"26:1-29:63\"\u003e\n\u003cstrong\u003eHigh-Performance Engineering:\u003c\/strong\u003e\n\u003cul data-sourcepos=\"27:5-29:63\"\u003e\n\u003cli data-sourcepos=\"27:5-27:58\"\u003eCNC mandrel-bent T304L stainless steel construction.\u003c\/li\u003e\n\u003cli data-sourcepos=\"28:5-28:69\"\u003eF1-style high-velocity merge collectors for maximum scavenging.\u003c\/li\u003e\n\u003cli data-sourcepos=\"29:5-29:63\"\u003e3D-scanned OEM header design for perfect bolt-on fitment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-sourcepos=\"30:1-35:20\"\u003e\n\u003cstrong\u003eCatalytic Converters:\u003c\/strong\u003e\n\u003cul data-sourcepos=\"31:5-35:20\"\u003e\n\u003cli data-sourcepos=\"31:5-31:91\"\u003eGerman-imported HJS HD tri-metallic 200-cell EURO 6 homologated catalytic converters.\u003c\/li\u003e\n\u003cli data-sourcepos=\"32:5-32:91\"\u003e\u003cspan class=\"citation-0 interactive-span-selected-v2\"\u003eLargest catalytic converters that fit in the factory location for maximum flow.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cspan class=\"citation-0 interactive-span-selected-v2\"\u003e \u003c\/span\u003e\n\u003cul data-sourcepos=\"31:5-35:20\"\u003e\n\u003cli data-sourcepos=\"33:5-33:42\"\u003e\u003cspan class=\"citation-0 interactive-span-selected-v2\"\u003eFlows 93% of a 2.5 in straight pipe.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cspan class=\"citation-0 interactive-span-selected-v2\"\u003e \u003c\/span\u003e\n\u003cul data-sourcepos=\"31:5-35:20\"\u003e\n\u003cli data-sourcepos=\"34:5-34:68\"\u003e\n\u003cspan class=\"citation-0 citation-end-0 interactive-span-selected-v2\"\u003eOptimized for\u003csup class=\"superscript visible highlight\" data-turn-source-index=\"1\"\u003e \u003c\/sup\u003e\u003c\/span\u003eNO catalyst generated check engine light.\u003c!----\u003e\u003cspan class=\"button-container hide-from-message-actions ng-star-inserted\"\u003e   \u003c\/span\u003e\n\u003cdiv class=\"container ng-tns-c2883522283-20\"\u003e\n\u003cdiv class=\"carousel-container ng-tns-c2883522283-20\"\u003e\n\u003cdiv class=\"carousel-content ng-tns-c2883522283-20\"\u003e\n\u003cdiv data-test-id=\"sources-carousel-source\" class=\"sources-carousel-source ng-tns-c2883522283-20 ng-star-inserted\"\u003e\n\u003cdiv class=\"source-card-container\"\u003e\n\u003cdiv class=\"source-card-content\"\u003e\u003ca rel=\"noopener\" class=\"link\" href=\"https:\/\/www.mgcsuspensions.com\/products\/fabspeed-rennkraft-modular-headers-2015-16-porsche-981-gt4-spyder?variant=48773596545322\u0026amp;currency=USD\" target=\"_blank\"\u003e\u003cspan aria-label=\"Opens in a new window\"\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\n\u003c\/div\u003e\n\u003c!----\u003e\u003c!----\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!----\u003e\n\u003c\/div\u003e\n\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\n\u003c\/li\u003e\n\u003cli data-sourcepos=\"35:5-35:20\"\u003eEPA compliant.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-sourcepos=\"36:1-38:90\"\u003e\n\u003cstrong\u003eCompatibility \u0026amp; Installation:\u003c\/strong\u003e\n\u003cul data-sourcepos=\"37:5-38:90\"\u003e\n\u003cli data-sourcepos=\"37:5-37:27\"\u003eNo ECU tune required.\u003c\/li\u003e\n\u003cli data-sourcepos=\"38:5-38:90\"\u003eCompatible with any aftermarket exhaust system designed for factory Porsche header.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"response-container-footer ng-tns-c950545886-17\"\u003e\n\u003cdiv class=\"actions-container-v2 ng-tns-c1360700008-19 simplified-action-bar\"\u003e\n\u003cdiv class=\"buttons-container-v2 ng-tns-c1360700008-19 ng-star-inserted\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003ePorsche \u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/p\u003e\n\u003cp\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/p\u003e\n\u003cp data-sourcepos=\"3:1-3:13\"\u003e\u003cstrong\u003eReturns subject to a 25% restocking fee.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Fabspeed","offers":[{"title":"Sport Cats","offer_id":40848448520250,"sku":"FS.POR.991.MH.SC","price":5624.89,"currency_code":"USD","in_stock":true},{"title":"Cat Bypass Pipes","offer_id":40848448553018,"sku":"FS.POR.991.MH.XX","price":5624.89,"currency_code":"USD","in_stock":true},{"title":"Sport Cat+Cat Bypass Pipes","offer_id":40848448585786,"sku":"FS.POR.991.MH.SCCB","price":7032.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0549\/4846\/2650\/files\/Porsche-Modular-Headers-And-HJS-Catalytic-Converte-0.jpg?v=1747785587","url":"https:\/\/sierramadrecollection.com\/products\/porsche-modular-headers-and-hjs-catalytic-converters-911-2012-2016-fs-por-991-mh-sc","provider":"Sierra Madre Collection","version":"1.0","type":"link"}