Happy to spool. Presenting the AWE Performance Catalyst for B9 S4/S5. Available now.

  • Proudly designed, engineered, and manufactured in-house at AWE
  • Max gains of 23 hp and 27 ft-lbs of torque at the crank
  • Features a 145mm, 200CPSI EURO6 HJS HD catalyst with tri-lobe core
  • Precision CNC-machined billet T304 stainless steel flange
  • Direct bolt-on for factory like simplicity
  • Specifically engineered resonated downpipes for use with the catalyst available separately
  • Handcrafted out of US-sourced .065 wall T304L stainless steel
  • Less is more: clean, straight-through design maximizes performance
  • Perfect fitment, guaranteed
  • Features the AWE No CEL Guarantee
  • Lifetime warranty (one year on catalyst core)

Performance Catalyst:

A precision CNC-machined billet T304 stainless steel flange, massive 145mm 200CPSI EURO 6 HJS catalyst with tri-lobe core, and 2.5Ē T304L stainless steel make up the Performance Catalystís construction for high-flow decongestion and an additional 12 hp and 15 ft-lbs of torque to the wheels.

Performance Catalyst-specific downpipes:

Given the increase of airflow with the Performance Catalyst, special resonators were developed to keep frequencies in check, and drone defeated. Though they are not required to run the Performance Catalyst, we strongly recommend and encourage the use of these specific downpipes when equipping the Performance Catalyst for a drone-free experience.