TNEER Valvetronic Exhaust System for Porsche 911 991.1 Carrera / S / GTS 2011-2016
(Fits- Porsche 911 991.1 Carrera / S / GTS 2011-2016)
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TNEER Valvetronic Exhaust System for Porsche 911 991.1 Carrera / S / GTS 2011-2016
The Porsche 911 991.1 Carrera, Carrera S, and Carrera GTS represent three distinct specifications within the first generation of the water-cooled 991 platform, all sharing the naturally aspirated flat-six architecture that defines this generation as the last non-turbocharged Carrera before the 991.2 transition. The Carrera produces 350 horsepower from a 3.4-litre flat-six, the Carrera S delivers 400 horsepower from a 3.8-litre flat-six, and the Carrera GTS extracts 430 horsepower from the same 3.8-litre unit through revised intake, exhaust, and engine management calibration that distinguish it as the most performance-focused naturally aspirated Carrera of the generation. On a naturally aspirated platform across all three specifications, the exhaust system has a direct and unmediated relationship with engine breathing, throttle response, and acoustic output at every point in the rev range. TNEER engineers this valvetronic system to accommodate all three variants, with tube routing, X-pipe placement, and mounting geometry developed to the rear-engine chassis layout shared across the Carrera, Carrera S, and Carrera GTS.
Each section is formed from single-piece high-grade stainless-steel tubing using robotic pipe bending technology, producing continuous tube geometry throughout the system without the weld joints and flow disruptions of multi-segment construction. The mid X-pipe is integrated at the mid-system junction, cross-linking both exhaust banks to balance pulse energy between the flat-six's cylinder groups. On a naturally aspirated flat-six of this configuration, mid-system scavenging through an X-pipe contributes to both exhaust flow efficiency and the tonal coherence of the note across the rev range, allowing each variant's specific flat-six character to express itself more fully through the system at every engine speed. The system installs to all factory mounting locations across the Carrera, Carrera S, and Carrera GTS, requiring no structural modification and maintaining correct chassis alignment throughout. The quad silver tips complete the system at the rear fascia, providing a clean, high polish finish consistent with the 991.1's precise, purposeful aesthetic.
The valvetronic rear mufflers are managed through the TACS, TNEER's proprietary App Control System, which gives the driver full manual authority over valve position through a dedicated application interface. The TACS allows valve control independent of driving mode or vehicle operating condition, placing acoustic output entirely under the driver's authority at any time. Valves closed, the system maintains a composed tone appropriate for road use while presenting more of the naturally aspirated flat-six's character than the factory exhaust allows at any throttle position. Valves open, the full acoustic output of the 3.4-litre Carrera, 3.8-litre Carrera S, or 3.8-litre Carrera GTS flat-six is unobstructed. As engine speed builds toward the redline, the exhaust note rises with the mechanical precision that defines a naturally aspirated Porsche flat-six at full throttle. The tonal difference between the Carrera, Carrera S, and Carrera GTS at full output reflects each variant's specific state of tune, and the TACS makes that acoustic experience available on demand on every drive. On the last naturally aspirated Carrera generation, that distinction from the factory exhaust's permanently managed output is both immediate and significant.
About TNEER:
TNEER is built around a single engineering conviction: the exhaust system is not a peripheral component. It is the primary interface between the engine and the driver's experience of it. Every system TNEER produces is developed to bring out the true voice of the engine it is built for, improving exhaust flow and delivering a distinct tone that is mechanical, raw, and directly connected to the character of the car.
The manufacturing process that defines TNEER's fitment standard is their high-tech robotic pipe bending technology. Rather than fabricating exhaust routing from multiple welded sections, TNEER forms each tube from a single continuous piece, bending high-grade material to navigate the spatial constraints of each specific engine bay without the diameter reductions, flow disruptions, and structural inconsistencies that welded multi-piece construction introduces. The result is an exhaust system with continuous tube geometry, perfect fitment to the platform it is built for, and no compromises in the routing that precision bending makes unnecessary.
For enthusiasts who regard sound and performance as inseparable elements of the driving experience, TNEER engineers each system to deliver both from the first throttle input.
Fitment:
- Porsche 911 991.1 Carrera 3.4L 2011-2016
- Porsche 911 991.1 Carrera S 3.8L 2011-2016
- Porsche 911 991.1 Carrera GTS 3.8L 2015-2016