Valvetronic Designs 2017-2019 Porsche 991.2 Carrera / S / GTS Valved Sport Exhaust System
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Sound & Video
Sound & Control
Valves Open
With valves open, exhaust gases flow unrestricted through the valve muffler and out through the X-pipe, producing an aggressive, high-pitched tone that cuts through the turbochargers' natural sound dampening. The CAD-designed manifolds restore the flat-six character that the factory system suppresses, delivering a visceral sound that finally matches the 991.2's performance capabilities.
Valves Closed
Valves closed, exhaust flow is redirected through twin quad-chambered mufflers that reduce volume to near-stock levels with exceptional drone suppression. The 991.2 returns to its grand touring persona — quiet, composed, and refined enough for daily commuting, highway cruising, and any situation where discretion is the priority.
Construction & Engineering
- Material: T304 Stainless Steel or Grade 5 Titanium
- Headers: CAD-designed, CFD-tested exhaust manifolds (included in all configurations)
- Center Section: Center X-pipe for pulse balancing
- Mufflers: Quad-chambered design for closed-valve refinement
- Valve System: Electronic exhaust valves
- Fabrication: Fully mandrel bent with precision TIG welds
Specifications
Fitment
| Year | Make | Model | Variant |
|---|---|---|---|
| 2017–2019 | Porsche | 911 Carrera | 991.2 |
| 2017–2019 | Porsche | 911 Carrera S | 991.2 |
| 2017–2019 | Porsche | 911 GTS | 991.2 |
Installation
What’s Included
- Valvetronic Designs valved sport exhaust rear section
- CAD-designed, CFD-tested exhaust manifolds
- Center X-pipe
- Quad-chambered muffler assemblies
- Electronic valve assemblies
- All required gaskets, clamps, and mounting hardware
- Installation instructions
VALVETRONIC DESIGNS
Valvetronic Designs Valved Sport Exhaust System for Porsche 991.2 Carrera / S / GTS
Turbocharged Flat-Six Meets Valved Exhaust Engineering — Rediscover the 911's Voice
When Porsche transitioned the 991.2 Carrera to a 3.0-liter twin-turbocharged flat-six, the automotive world gained a more efficient and powerful 911 — but lost something intangible in the process. The factory exhaust system, optimized for turbocharged operation, delivers a muted and somewhat generic tone that lacks the character Porsche enthusiasts expect from a rear-engined icon. The turbochargers themselves act as natural sound dampeners, and the stock mufflers compound the effect, leaving the 991.2 Carrera sounding less distinctive than its naturally aspirated predecessor despite being objectively faster.
The Valvetronic Designs 991.2 Carrera Valvetronic exhaust addresses this with a comprehensive engineering approach that begins upstream. CAD-designed and CFD-tested exhaust manifolds are included regardless of configuration, recalibrating exhaust pulse timing and raising pitch to restore the high-frequency character that turbocharging naturally suppresses. Combined with a valved rear section featuring unrestricted flow paths and quad-chambered muffler internals, the system delivers a dramatically enhanced sound signature that restores the emotional connection between driver, engine, and exhaust note.
The result is a 991.2 that sounds like a proper 911 again — aggressive and engaging when you want it, whisper-quiet and drone-free when you need it.
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