Active Autowerke GESI Catted Downpipe – Toyota GR Supra A90/A91 (B58) Signature Series

Enhance the performance and drivability of your Toyota GR Supra A90/A91 with the Active Autowerke Signature Series Catted Downpipe, engineered specifically for Australian conditions and high-performance builds. Designed to deliver increased power, faster turbo spool, and improved throttle response, this upgrade provides a perfect balance between performance and emissions-conscious design.

Featuring advanced GESI high-flow catalytic technology, this downpipe maintains catalytic efficiency while significantly improving exhaust flow—without triggering a check engine light (CEL). It’s the ideal upgrade for Supra owners looking to unlock performance while retaining daily drivability and reliability.

Key Features

• Active Autowerke Signature Series catted downpipe for B58 Supra
  
• No CEL for catalytic efficiency (GESI high-flow technology)
  
• 4.5-inch high-flow catalytic converter design
  
• Faster turbo spool and improved throttle response
  
• Rated for high-performance applications (500–850 HP)
  
• Ultra high-flow 400 CPSI catalytic converter
  
• Full 304 stainless steel construction including substrate
  
• Cast stainless steel V-band for precise OEM fitment
  
• Withstands temperatures up to 1500°F
  
• Fully OBD2 compliant (excluding California)
  
• Manufactured in the USA (Miami, Florida)

Performance & Functionality

The factory downpipe restricts exhaust flow, limiting the performance potential of the B58 engine. The Active Autowerke GESI catted downpipe improves exhaust gas evacuation, resulting in:

• Quicker turbo spool and improved boost response
  
• Increased horsepower and torque potential
  
• Enhanced throttle response and acceleration
  
• More aggressive exhaust tone while retaining refinement

GESI High-Flow Catalytic Technology

This system utilises industry-leading GESI catalytic converters designed for high-performance applications.

• EPA registered and OBD2 compliant (excluding California)
  
• High-flow design reduces back pressure without sacrificing emissions efficiency
  
• Proprietary precious metal loading reduces risk of CEL
  
• Reaches operating efficiency within seconds of startup
  
• Engineered for durability under extreme conditions

Installation

• Direct bolt-on design allows installation using factory mounting points.

Professional installation is highly recommended

Installation is available at Sequential Racing – Altona North, Melbourne
To organise installation, contact: sales@sequentialracing.com.au

Sound clips available via Sequential Racing Instagram

Vehicle Fitment

B58 (Turbo)

• Toyota GR Supra A90 (MK5) – 2019+
  
• Toyota GR Supra A91 – 2020+

What’s Included

• Active Autowerke GESI Catted Downpipe

Warranty

• 5 Year / 50,000 Mile Warranty (shell and tube ends)
  
• 2 Year / 25,000 Mile Warranty (catalytic core, original purchaser only)

Important Notes

• Not legal for use on vehicles registered in California
  
• Warranty may be void if excessive burble tuning is used
  
• Ensure compatibility with local emissions regulations

Why Choose Sequential Racing?

Sequential Racing supplies premium performance upgrades for GR Supra owners, offering proven solutions tailored for Australian enthusiasts. The Active Autowerke GESI Catted Downpipe delivers a powerful upgrade with reliability and compliance in mind.

• No CEL solution with proven GESI technology
  
• Improved performance without sacrificing drivability
  
• High-quality construction from a trusted brand

Upgrade your Toyota GR Supra A90/A91 with the Active Autowerke GESI Catted Downpipe and experience improved performance, faster spool, and refined sound.