Active Autowerke GESI G-Sport Cats Upgrade – BMW E9X M3 (S65)

For Signature Track Pipe / X-Pipe Systems

Upgrade your Active Autowerke Signature Track Pipe with the GESI G-Sport Ultra High Flow Cats, designed specifically for the BMW E9X M3. This bolt-on upgrade adds high-performance catalytic converters to your existing X-pipe setup—helping eliminate CEL issues while maintaining strong exhaust flow and meeting EPA-based emissions standards (non-CARB regions).

Ideal for enthusiasts running a catless Signature Track Pipe who want to reintroduce catalytic efficiency without sacrificing performance.

Key Features

• Direct upgrade for Active Autowerke Signature Track Pipe (X-pipe)
  
• Includes dual 4” GESI G-Sport Gen 2 high-flow catalytic converters
  
• Designed to minimise or eliminate CEL without tuning
  
• Bolt-on installation – no cutting or welding required
  
• Compatible with most aftermarket exhaust systems
  
• Improves exhaust scavenging and flow efficiency
  
• Reduces emissions while maintaining performance
  
• Constructed from 100% 304 stainless steel

Performance Benefits

Engineered to balance power, sound, and emissions.

• Up to 10+ RWHP gains depending on setup
  
• Improved exhaust scavenging for better airflow
  
• Maintains strong mid-range and top-end performance
  
• Significant weight reduction vs OEM system (approx. 25 lbs vs 40 lbs)
  
• Refined exhaust tone with reduced harshness

GESI G-Sport Catalytic Technology

Advanced emissions performance with high flow capability.

• 400 cell ultra high-flow catalytic converters
  
• EPA registered and OBD2 compliant (non-CARB regions)
  
• Designed to minimise catalytic efficiency CEL
  
• Rated for 300–500 horsepower per catalyst
  
• Rapid light-off (operational within seconds of startup)
  
• Full 304 stainless steel substrate for durability

Build Quality

Built for performance and long-term reliability.

• TIG-welded 304 stainless steel construction
  
• Furnace-brazed catalytic substrate for strength
  
• Precision fitment with factory-style flanges
  
• Withstands temperatures up to 1500°F

Installation

• Direct bolt-on upgrade to Signature Track Pipe
• No cutting or welding required

Professional installation recommended

Installation available at Sequential Racing – Altona North, Melbourne

Vehicle Fitment

• BMW E90 M3
  
• BMW E92 M3
  
• BMW E93 M3

Engine: S65 V8

Requires Active Autowerke Signature Track Pipe / X-Pipe

Important Notes

• Not legal for use in California or CARB-restricted regions
  
• Designed for performance applications depending on local regulations
  
• Warranty may be void with excessive burble settings

Warranty

• 1 Year standard Active Autowerke exhaust warranty
  
• 5 Year / 50,000 Mile warranty (shell and tube ends)
  
• 2 Year / 25,000 Mile warranty on catalytic core

Why Choose Sequential Racing?

Sequential Racing supplies premium exhaust solutions for BMW M platforms, offering proven upgrades that balance performance, reliability, and usability.

• High-flow catalytic solution for track setups
  
• Maintains performance while reducing CEL risk
  
• OEM-level fitment with easy installation

Upgrade your BMW E9X M3 with the Active Autowerke GESI Cats Upgrade for Signature X-Pipe and achieve the perfect balance of power, sound, and emissions control.