Manufacturer SKU: POR.991.TUR.VSES.TI Porsche 991 Turbo / Turbo S – Titanium Valved Exhaust System Grade 5 Titanium • Center X-Pipe • True Motorsport Tone Overview The 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 CAD-designed, CFD-tested exhaust manifolds to sharpen pulse timing and raise pitch for a cleaner, more motorsport-inspired note. Downstream, a valved titanium rear section delivers dual personalities on demand—raw and unfiltered when you want it, refined and comfortable when you need it. Sound Dynamics - Valves Open: After the turbos, gases travel straight ~13 inches to atmosphere for an uncorrupted, razor-edged Porsche wail—crisp up top with aggressive shift pops. - Valves Closed: Flow is routed through two quad-chambered mufflers for a substantial drop in volume and a calm cabin demeanor. - Center X-Pipe: Smooths pulse interaction, kills drone, and adds a polished, high-frequency character throughout the rev range. Performance & Engineering - CFD-Validated Manifolds: Optimized runner geometry improves pulse energy, response, and tone. - Grade 5 Titanium Construction: Extreme strength-to-weight with superior heat resistance. - Vacuum-Actuated Valves: Instant, reliable control of volume and character. - Precision TIG Welds: Hand-finished for durability and a showpiece finish. - Weight Savings: 9.5 lb lighter than the factory system. - 100% Reversible: Bolt-on design—return to stock anytime. Visual Details - Signature Tips: Premium finishes that complement the 991 Turbo’s rear profile. Fitment - 2014–2019 Porsche 911 (991) Turbo - 2014–2019 Porsche 911 (991) Turbo S