B9 S4 / S5 Downpipe

Compatible Vehicles:

• 2017- Audi S4 B9 
• 2017- Audi S5 B9

*Available Options:

• Ultra high-performance 200 cell HJS HD, Made in Germany most reputed high flow converters for their outstanding characteristics, quality and durability. Read more about HJS cats.
• GESI GEN2 400cpsi 5"- catalytic converters rated for 1000hp. The new GEN2 series provides a significant improvement in exhaust flow over stock and offers the latest emissions technology. EPA Compliant catalytic converters have been third-party lab tested to meet or exceed local emissions standards in North America (excluding California) and will address Check Engine light issues with proper engine setup. (No CEL, No Tuning Required)
• GESI GEN2 400cpsi 6"- catalytic converters rated for 1200hp. The new GEN2 series provides a significant improvement in exhaust flow over stock and offers the latest emissions technology. EPA Compliant catalytic converters have been third-party lab tested to meet or exceed local emissions standards in North America (excluding California) and will address Check Engine light issues with proper engine setup. (No CEL, No Tuning Required)
• OEM-style Heat Shielding with ceramic inner liner - the best way to reduce radiant heat up to 70%. Usual thermal wraps or coats not even close in effectiveness and durability to the Heat Shields. Must have option for the modern temp sensitive turbo engines.
• Optional Gasket Set - 2 Lower 

Main Features:

• Significant power gain
• Faster spool up and better throttle response
• Increasing the life of the turbos 
• Reducing under hood temperature
• Adds a very nice tone to the exhaust
• 100% bolt-on installation
• 100% TIG welded and back purged
• Highest quality 2.0mm wall 304 stainless steel
• OEM-spec V-band flanges
• All brackets and mounts as on OEM unit

Notes:

Removing of factory catalytic converters will trigger a сheck engine light. Firmware update recommended to get maximum performance gains.