Porsche 992 Turbo / Turbo S – EPA-Compliant 400 Cell Catted Downpipes

Precision Engineered for the 3.8L Twin-Turbo Flat-Six • High-Flow • Compliant •

Introducing Our NEW 400 Cell EPA-Compliant Downpipes for 992 Turbo

The Porsche 992 Turbo and Turbo S represent the pinnacle of modern forced-induction performance. While the 3.8L twin-turbo flat-six delivers exceptional power from the factory, restrictive catalysts limit exhaust efficiency and mute the engine’s true character. Our NEW EPA-compliant 400 cell high-flow catted downpipes are engineered to reduce backpressure, enhance turbo responsiveness, and refine the exhaust signature — all while maintaining emissions compliance standards.

This upgrade elevates performance while preserving the precision expected from Porsche.

Why Upgrade to 400 Cell?

• EPA-Compliant 400 Cell High-Flow Catalysts: Increased exhaust efficiency while maintaining compliance standards.
• Improved Turbo Response: Reduced restriction enhances spool characteristics and throttle precision.
• Enhanced Exhaust Presence: Deeper tone with improved clarity at higher RPM.
• Maintained Drivability: Noticeable gains without sacrificing refinement or daily comfort.

Engineering & Performance

• Optimized Flow Architecture: Minimizes backpressure while preserving catalyst efficiency.
• Mandrel-Bent Tubing: Smooth internal transitions for consistent exhaust velocity.
• Precision TIG Welding: Built to withstand extreme exhaust temperatures and sustained boost levels.
• Direct OEM Bolt-On Installation: Utilizes factory mounting locations for seamless installation.
• Engineered to Pair with Valvetronic Exhaust Systems

Sound Character

• Stock Exhaust + Downpipes: Subtle increase in depth and presence with improved turbo clarity.
• Valvetronic Exhaust + Downpipes: Sharper response, stronger turbo acoustics, and a more motorsport-inspired tone while retaining Porsche composure.

Construction & Durability

• Premium high-grade stainless steel construction
• High-temperature resistant 400 cell catalyst cores
• OEM-style sensor placement for proper operation
• Engineered for long-term reliability under high-performance conditions

Elevate the performance and character of your 992 Turbo — engineered with precision, starting at the source.

📩 Questions or ordering assistance? customerservice@valvetronic.com

Orders are processed same or next business day. Shipping times vary depending on the product, shipping service, and whether freight shipping is required. While we ensure all inventory levels are current and accurate, they can change due to logistics and inventory feeds. Standard shipping typically takes 3-7 business days, but some items may require additional time depending on their origin. Feel free to call us anytime for the latest status of your order.