Capristo Valved Exhaust with Mid Pipes (CES3) Audi S4 S5 (B9 Capristo Valved Exhaust with Mid Pipes (CES3) Audi S4 S5 (B9 Capristo Valved Exhaust System with Mid Pipes for B8 Audi RS4 RS5 ECS Tuning AUDI S4 B8 3.0T Valved Cat Back Exhaust Non Resonated With Audi S4 S5 B8 B8.5 Valved Cat Back Exhaust Valved Exhausts Audi S4 S5 B9 B9.5 Valved Cat Back Exhaust Valved Exhausts. 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