Porsche 971 Panamera Turbo / GTS Valvetronic Exhaust System - Yonristic Performance

At the core of this system is a true performance-driven architecture designed specifically around the airflow demands and firing order of Porsche’s 4.0L V8. From the inlet to the rear section, the exhaust uses a carefully optimized layout that minimizes turbulence and pressure buildup while maintaining exhaust gas velocity. The internal flow path is engineered to enhance scavenging and balance pressure waves between banks, resulting in a sharper throttle response and a smoother, more linear power delivery across the rev range.

The system incorporates an active valved rear section, allowing the exhaust to operate in two distinct personalities. With the valves closed, exhaust gases are routed through a tuned internal path that suppresses drone and unwanted resonance, keeping the cabin refined during highway cruising and daily use. Open the valves, and the flow transitions to a more direct, straight-through path—unlocking maximum volume, aggressive overrun character, and a high-energy, exotic V8 tone that builds cleanly with RPM rather than breaking into harshness.

Every component is hand-built and TIG-welded, using casted transitions and collectors where necessary to ensure smooth internal geometry and consistent wall thickness. The system is designed using underbody scan data to maintain perfect clearance, OEM-style mounting points, and a true bolt-on installation with no cutting or welding required. Whether paired with a stock vehicle or a tuned setup, this exhaust provides the airflow headroom and acoustic control demanded by high-output Panamera builds.

Key Specifications

Configuration

• Performance cat-back exhaust system
  
• Optimized internal flow architecture for 4.0L twin-turbo V8
  
• Active valved rear section with dual flow paths
  

Valve Control

• Factory drive-mode valve integration supported
  
• Included remote valve control module for independent on-demand operation
  
• Seamless switching between quiet and aggressive modes
  

Materials & Construction

• 
  Available in AISI 304 Stainless Steel or 4AL-6V (Grade 5) Titanium
  
• Fully TIG-welded, hand-finished construction
  
• Casted collectors and transitions for optimal internal airflow
  
• Heat-resistant design for sustained high-load driving
  

Tips

• Quad-tip configuration
  
• Optional finishes available (depending on build spec)
  

Installation

• 100% bolt-on installation
  
• Uses OEM mounting points
  
• No cutting, welding, or permanent modification required
  

Porsche Panamera Turbo (971) – 2017+Porsche Panamera Turbo Sport Turismo (971) – 2017+
Porsche Panamera GTS (971) – 2019+
Porsche Panamera GTS Sport Turismo (971) – 2019+
Engine: 4.0L Twin-Turbo V8