Milltek Valved & Resonated Catback Exhaust System for B8.5 Audi S4 S5 ECS News ECS Headers, Downpipes, & Valved Exhaust B8 8.5 S4 S5 Valved Sport Exhaust System for Audi B8 S4 S5 3.0T 2009 2015 Dual Ex IE Midpipe Exhaust Upgrade For Audi B9 B9.5 S4 & S5 3.0T Integrated. Demand the Best. Demand Capristo. Capristo Exhaust Systems are engineered and manufactured exclusively at our factory in Sundern, Germany, utilizing advanced 3D laser scanning, CAD design, digital prototyping, and CNC bending milling. Technical Highlights: 100% Made in Sundern, Germany Highest Grade T309 (1. 4828) Stainless Steel; similar resonance properties to Inconel, notably used in F1 Proprietary Valves Manufactured by Capristo Patented Reinforced Design to Eliminate Resonance Manually TIG Welded by Capristo Craftsmen Hand Polished to a Mirror Finish Post Weld Proprietary Module to Handle Valve Control Utilizes OEM Exhaust Finishing Tips for Stealth Look Optional Capristo Exhaust Tips are Available CES3 EVCU1 Installation User Manual Installation Guide