{"product_id":"valvetronic-valved-race-exhaust-system-for-porsche-911-turbo-991-1-991-2","title":"Valvetronic Valved Race Exhaust System for Porsche 911 Turbo 991.1 \/ 991.2","description":"\u003cp\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/1axSOBoIwKU?si=MNvpxJWciaMiJMJr\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003ch1 data-start=\"0\" data-end=\"64\"\u003ePorsche 991 Turbo \/ Turbo S – Titanium Valved Exhaust System\u003c\/h1\u003e\n\u003cp data-start=\"65\" data-end=\"146\"\u003eGrade 5 Titanium • Center X-Pipe • True Motorsport Tone\u003c\/p\u003e\n\u003ch3 data-start=\"148\" data-end=\"162\"\u003eOverview\u003c\/h3\u003e\n\u003cp data-start=\"163\" data-end=\"661\"\u003eThe 991 Turbo is the benchmark for all-around performance—but like every turbocharged Porsche, the stock soundtrack falls short. Valvetronic Designs fixes that at the source. Our system starts with \u003cstrong data-start=\"361\" data-end=\"407\"\u003eCAD-designed, CFD-tested exhaust manifolds\u003c\/strong\u003e to sharpen pulse timing and \u003cstrong data-start=\"436\" data-end=\"451\"\u003eraise pitch\u003c\/strong\u003e for a cleaner, more motorsport-inspired note. Downstream, a \u003cstrong data-start=\"512\" data-end=\"544\"\u003evalved titanium rear section\u003c\/strong\u003e delivers dual personalities on demand—raw and unfiltered when you want it, refined and comfortable when you need it.\u003c\/p\u003e\n\u003cp\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/nGwP7p1gdho\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003chr data-start=\"663\" data-end=\"666\"\u003e\n\u003ch3 data-start=\"668\" data-end=\"688\"\u003eSound Dynamics\u003c\/h3\u003e\n\u003cul data-start=\"689\" data-end=\"1139\"\u003e\n\u003cli data-start=\"689\" data-end=\"864\"\u003e\n\u003cp data-start=\"691\" data-end=\"864\"\u003e\u003cstrong data-start=\"691\" data-end=\"707\"\u003eValves Open:\u003c\/strong\u003e After the turbos, gases travel \u003cstrong data-start=\"739\" data-end=\"776\"\u003estraight ~13 inches to atmosphere\u003c\/strong\u003e for an uncorrupted, razor-edged Porsche wail—crisp up top with aggressive shift pops.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"865\" data-end=\"1002\"\u003e\n\u003cp data-start=\"867\" data-end=\"1002\"\u003e\u003cstrong data-start=\"867\" data-end=\"885\"\u003eValves Closed:\u003c\/strong\u003e Flow is routed through \u003cstrong data-start=\"909\" data-end=\"940\"\u003etwo quad-chambered mufflers\u003c\/strong\u003e for a substantial drop in volume and a calm cabin demeanor.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1003\" data-end=\"1139\"\u003e\n\u003cp data-start=\"1005\" data-end=\"1139\"\u003e\u003cstrong data-start=\"1005\" data-end=\"1023\"\u003eCenter X-Pipe:\u003c\/strong\u003e Smooths pulse interaction, \u003cstrong data-start=\"1051\" data-end=\"1066\"\u003ekills drone\u003c\/strong\u003e, and adds a polished, high-frequency character throughout the rev range.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1141\" data-end=\"1144\"\u003e\n\u003ch3 data-start=\"1146\" data-end=\"1177\"\u003ePerformance \u0026amp; Engineering\u003c\/h3\u003e\n\u003cul data-start=\"1178\" data-end=\"1773\"\u003e\n\u003cli data-start=\"1178\" data-end=\"1279\"\u003e\n\u003cp data-start=\"1180\" data-end=\"1279\"\u003e\u003cstrong data-start=\"1180\" data-end=\"1208\"\u003eCFD-Validated Manifolds:\u003c\/strong\u003e Optimized runner geometry improves pulse energy, response, and tone.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1280\" data-end=\"1376\"\u003e\n\u003cp data-start=\"1282\" data-end=\"1376\"\u003e\u003cstrong data-start=\"1282\" data-end=\"1316\"\u003eGrade 5 Titanium Construction:\u003c\/strong\u003e Extreme strength-to-weight with superior heat resistance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1478\" data-end=\"1560\"\u003e\n\u003cp data-start=\"1480\" data-end=\"1560\"\u003e\u003cstrong data-start=\"1480\" data-end=\"1507\"\u003eVacuum-Actuated Valves:\u003c\/strong\u003e Instant, reliable control of volume and character.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1561\" data-end=\"1642\"\u003e\n\u003cp data-start=\"1563\" data-end=\"1642\"\u003e\u003cstrong data-start=\"1563\" data-end=\"1587\"\u003ePrecision TIG Welds:\u003c\/strong\u003e Hand-finished for durability and a showpiece finish.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1643\" data-end=\"1710\"\u003e\n\u003cp data-start=\"1645\" data-end=\"1710\"\u003e\u003cstrong data-start=\"1645\" data-end=\"1664\"\u003eWeight Savings:\u003c\/strong\u003e \u003cstrong data-start=\"1665\" data-end=\"1683\"\u003e9.5 lb lighter\u003c\/strong\u003e than the factory system.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1711\" data-end=\"1773\"\u003e\n\u003cp data-start=\"1713\" data-end=\"1773\"\u003e\u003cstrong data-start=\"1713\" data-end=\"1733\"\u003e100% Reversible:\u003c\/strong\u003e Bolt-on design—return to stock anytime.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1775\" data-end=\"1778\"\u003e\n\u003ch3 data-start=\"1780\" data-end=\"1800\"\u003eVisual Details\u003c\/h3\u003e\n\u003cul data-start=\"1801\" data-end=\"1885\"\u003e\n\u003cli data-start=\"1801\" data-end=\"1885\"\u003e\n\u003cp data-start=\"1803\" data-end=\"1885\"\u003e\u003cstrong data-start=\"1803\" data-end=\"1822\"\u003eSignature Tips:\u003c\/strong\u003e Premium finishes that complement the 991 Turbo’s rear profile.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1887\" data-end=\"1890\"\u003e\n\u003ch3 data-start=\"1892\" data-end=\"1905\"\u003eFitment\u003c\/h3\u003e\n\u003cul data-start=\"1906\" data-end=\"1989\"\u003e\n\u003cli data-start=\"1906\" data-end=\"1947\"\u003e\n\u003cp data-start=\"1908\" data-end=\"1947\"\u003e\u003cstrong data-start=\"1908\" data-end=\"1945\"\u003e2014–2019 Porsche 911 (991) Turbo\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1948\" data-end=\"1989\"\u003e\n\u003cp data-start=\"1950\" data-end=\"1989\"\u003e\u003cstrong data-start=\"1950\" data-end=\"1989\"\u003e2014–2019 Porsche 911 (991) Turbo S\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"included-list\"\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e","brand":"Valvetronic Designs","offers":[{"title":"Grade 5 Titanium \/ Sport Catback System","offer_id":51055560032550,"sku":"POR.991.TUR.VSES.FFH.TI","price":4999.99,"currency_code":"USD","in_stock":true},{"title":"Grade 5 Titanium \/ + RACE FREE FLOW HEADERS","offer_id":51633772691750,"sku":"POR.991.TUR.VSES.TI","price":5999.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0704\/2131\/5878\/files\/A7401669_a0b1a545-e305-4d54-ab08-dc03985aaf10.jpg?v=1756923844","url":"https:\/\/store.ngpracing.com\/products\/valvetronic-valved-race-exhaust-system-for-porsche-911-turbo-991-1-991-2","provider":"New German Performance","version":"1.0","type":"link"}