Description
The CARGRAPHIC Cat-Back Valved Sport Exhaust System provides dual-mode SOUND / RACE SOUND for Porsche 991.1 Carrera models, combining aggressive performance with precise acoustics. Built from SS304L lightweight stainless steel, this system maximizes flow, power, and throttle response while eliminating drone and resonation.
Kit Includes:
- Center silencer replacement X-pipe with gas stream collision and integrated 2.5" / 63.5mm pressureless open (PLO) exhaust valves
- Sport wheel-arch silencer set with flex pipe connections
- Sport double-end tailpipe set, 2x 3.5" / 89mm, Modena-design, round, double-wall, slash-cut, mirror-polished SS304L stainless steel
Compatibility:
- Porsche 991.1 Carrera 2 / 4 – 3.4L
- Porsche 991.1 Carrera S / 4S – 3.8L
- Porsche 991.1 Carrera GTS – 3.8L
Note: 3.4L models may require CARGRAPHIC performance valve control or retrofitting the Porsche Sport Exhaust (PSE) control for full valve functionality.
Features & Performance:
-
Dual-mode SOUND / RACE SOUND valves:
- Valves closed: Quieter tuned sporty note for cruising
- Valves open: Aggressive, amplified RACE SOUND with sharper, crisper volume
- No drone or resonation even with additional CARGRAPHIC components
- Absorptive silencer design for smooth tonal balance
- CNC mandrel-bent pipework for consistent diameter and optimized flow
- Integrated vacuum-controlled 2.5" / 63.5mm PLO valves
- Fully made from SS304L lightweight stainless steel
- Dyno-tested, high-performance components
- Olive- and slide connections for easy installation and precise adjustment
- Aeroquip fittings for thermal expansion without cracking
- Reinforced laser-cut brackets
- Reduced backpressure and operating temperature
- Maximized performance and improved throttle response
- Model-specific tuned sound aligned with Porsche characteristics
- Weight reduction and improved acoustics with freer revving
- Performance gain: up to +7kW (10PS) power and +24Nm torque
Optional Valve Control & Tailpipe Finishes:
-
Valve control for 3.4L:
- CARGRAPHIC performance valve control or retrofit PSE system
- Modes: SPORT (valves open) / COMFORT (valves closed)
- Valve control for 3.8L: Factory PSE control remains fully functional; CARGRAPHIC unit optional
-
Tailpipe finishes available:
- Mirror polished
- Gloss-Black enamelled
- Matt-Black Thermopaint
- Visual Carbon Matt / Gloss with stainless steel liner
- Lightweight brushed stainless steel
- Lightweight Matt-Black Thermopaint
The standard shipping rate applies to orders within the continental United States. If you intend to place an order outside of the continental US, please reach out to support@x-ph.com for assistance.
