Manufacturer SKU: LAM.AUD.URUS.RSQ8.FF.400C.BR Audi RSQ8 / SQ8 / SQ7 – EPA-Compliant 400 Cell Catted Downpipes Unlock the Full Potential of the 4.0T Twin-Turbo V8 • High-Flow • Compliant • Introducing Our NEW 400 Cell EPA-Compliant Downpipes for Audi 4.0T The 4.0T twin-turbo V8 powering the Audi RSQ8, SQ8, and SQ7 delivers immense performance — but factory catalyst restrictions hold it back. Our NEW EPA-compliant 400 cell high-flow catted downpipes are engineered to increase exhaust flow, enhance turbo efficiency, and dramatically sharpen the vehicle’s sound profile — all while maintaining emissions compliance standards. This is the foundation of true 4.0T performance. Why Upgrade to 400 Cell? - EPA-Compliant 400 Cell High-Flow Catalysts: Increased exhaust velocity while maintaining compliance standards. - Faster Turbo Spool: Reduced backpressure improves throttle response and mid-range torque delivery. - Sharper Exhaust Note: Enhanced turbo acoustics with deeper low-end presence and more aggressive top-end tone. - Optimized Performance Balance: Noticeable gains without compromising daily drivability. Performance & Engineering - Optimized Flow Architecture: Designed to reduce restriction while preserving catalyst efficiency. - Mandrel-Bent Tubing: Smooth internal transitions for maximum airflow. - Precision TIG Welding: Built to withstand extreme exhaust temperatures and boost pressures. - Direct OEM Bolt-On Design: Utilizes factory mounting locations for straightforward installation. - Engineered to Pair Seamlessly with Valvetronic Titanium Exhaust Systems Sound Transformation - Stock Exhaust + Downpipes: Noticeably louder with stronger turbo character and deeper exhaust tone. - Valvetronic Exhaust + Downpipes: Maximum transformation — sharper transitions, increased aggression, and a true RS-inspired exhaust signature. 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 boost Unleash the true sound and performance of your Audi 4.0T — starting at the source. 📩 Questions or ordering assistance? customerservice@valvetronic.com