{"product_id":"valvetronic-designs-audi-c8-rs6-rs7-400-cell-catted-downpipes","title":"Valvetronic Designs Audi C8 RS6 \/ RS7 400 Cell Catted Downpipes","description":"\u003cp\u003eAudi C8 RS6 \/ RS7 – EPA-Compliant 400 Cell Catted Downpipes\u003c\/p\u003e\u003cp\u003eEngineered for the 4.0T Twin-Turbo V8 • High-Flow • Compliant •\u003c\/p\u003e\u003cp\u003eIntroducing Our NEW 400 Cell EPA-Compliant Downpipes for C8 RS6 \/ RS7\u003c\/p\u003e\u003cp\u003eThe Audi C8 RS6 and RS7 combine executive refinement with supercar-level performance, powered by the formidable 4.0T twin-turbo V8. While factory catalysts restrict exhaust flow and mute the engine’s full character, our NEW EPA-compliant 400 cell high-flow catted downpipes are engineered to reduce backpressure, enhance turbo efficiency, and unlock a deeper, more commanding exhaust tone — all while maintaining emissions compliance standards.\u003c\/p\u003e\u003cp\u003eThis upgrade forms the foundation of serious 4.0T performance.\u003c\/p\u003e\u003cp\u003eWhy Upgrade to 400 Cell?\u003c\/p\u003e\u003cp\u003eEPA-Compliant 400 Cell High-Flow Catalysts: Increased exhaust efficiency while maintaining compliance standards.\u003c\/p\u003e\u003cp\u003eImproved Turbo Spool \u0026amp; Mid-Range Response: Reduced restriction sharpens throttle input and power delivery.\u003c\/p\u003e\u003cp\u003eEnhanced Exhaust Character: Deeper tone with stronger turbo acoustics and more pronounced high-RPM presence.\u003c\/p\u003e\u003cp\u003eStreet \u0026amp; Performance Balanced: Noticeable gains without compromising daily refinement.\u003c\/p\u003e\u003cp\u003ePerformance \u0026amp; Engineering\u003c\/p\u003e\u003cp\u003eOptimized Flow Architecture: Minimizes backpressure while preserving catalyst efficiency.\u003c\/p\u003e\u003cp\u003eMandrel-Bent Tubing: Smooth internal transitions for maximum exhaust velocity.\u003c\/p\u003e\u003cp\u003ePrecision TIG Welding: Built to endure sustained high exhaust temperatures and boost levels.\u003c\/p\u003e\u003cp\u003eDirect OEM Bolt-On Installation: Utilizes factory mounting locations for straightforward installation.\u003c\/p\u003e\u003cp\u003eEngineered to Pair Seamlessly with Valvetronic Exhaust Systems\u003c\/p\u003e\u003cp\u003eSound Transformation\u003c\/p\u003e\u003cp\u003eStock Exhaust + Downpipes: Noticeable increase in depth and turbo presence with enhanced exhaust clarity.\u003c\/p\u003e\u003cp\u003eValvetronic Exhaust + Downpipes: Maximum transformation — stronger presence, sharper transitions, and a true Audi Sport-inspired signature.\u003c\/p\u003e\u003cp\u003eConstruction \u0026amp; Durability\u003c\/p\u003e\u003cp\u003ePremium high-grade stainless steel construction\u003c\/p\u003e\u003cp\u003eHigh-temperature resistant 400 cell catalyst cores\u003c\/p\u003e\u003cp\u003eOEM-style sensor placement for proper operation\u003c\/p\u003e\u003cp\u003eEngineered for long-term reliability under high-performance conditions\u003c\/p\u003e\u003cp\u003eUnleash the full potential of your C8 RS6 or RS7 — starting at the source.\u003c\/p\u003e\u003cp\u003e📩 Questions or ordering assistance? customerservice@valvetronic.com\u003c\/p\u003e","brand":"Valvetronic Designs","offers":[{"title":"Default Title","offer_id":55671401447743,"sku":"AUD.C8.RS6.FF.400C.BR","price":4200.59,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0898\/1348\/3839\/files\/valvetronic-15031998513520-1.jpg?v=1789846713","url":"https:\/\/foreignautomotive.ca\/products\/valvetronic-designs-audi-c8-rs6-rs7-400-cell-catted-downpipes","provider":"Foreign Automotive","version":"1.0","type":"link"}