High-Flow Catless Downpipe with Cat Simulator – Toyota GR Corolla (G16E-GTS) 2023+

Unlock maximum performance from your Toyota GR Corolla with this High-Flow Catless Downpipe, engineered to deliver unrestricted exhaust flow, faster turbo response, and a more aggressive exhaust note. Designed for the 1.6L G16E-GTS turbocharged engine, this upgrade removes the restrictive factory catalytic converter to significantly improve power and efficiency.

Equipped with a built-in cat simulator, this system helps prevent check engine lights by simulating catalytic converter signals—offering a cleaner, hassle-free installation compared to traditional catless setups.

Key Features

• High-flow catless downpipe for Toyota GR Corolla 2023+
  
• Maximises exhaust flow for improved performance
  
• Increases horsepower and torque potential when tuned
  
• Improves turbo spool and throttle response
  
• Integrated cat simulator to reduce CEL occurrence
  
• Aggressive, deeper exhaust tone for performance driving
  
• Durable construction for long-term reliability
  
• Direct bolt-on installation with no cutting or welding required

Performance & Functionality

The factory downpipe restricts exhaust flow, limiting the efficiency of the GR Corolla’s turbocharged engine. This high-flow catless design improves exhaust gas evacuation, resulting in:

• Faster turbo spool and improved boost response
  
• Increased power output and sharper acceleration
  
• More aggressive exhaust sound under load
  
• Enhanced overall driving experience

Ideal for performance builds and track-focused setups

Cat Simulator Advantage

Unlike standard catless downpipes, this system includes a built-in cat simulator to improve usability.

• Helps prevent check engine lights by simulating catalytic signals
  
• Reduces the need for additional CEL solutions
  
• Simplifies installation and ownership experience

Installation

• Direct bolt-on design using factory mounting points
• Quick installation with no modification required

Professional installation is highly recommended

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

Vehicle Fitment

• Toyota GR Corolla – 2023+
  
• Engine: 1.6L G16E-GTS Turbocharged Inline-3

Compatible with non-OPF vehicles only

What’s Included

• High-Flow Catless Downpipe
  
• Integrated Cat Simulator

Important Notes

• This is a catless (race) downpipe intended for off-road or motorsport use only
  
• Not emissions compliant for road use in most regions
  
• ECU tuning is recommended to maximise performance
  
• Compatibility limited to non-OPF vehicles

Why Choose Sequential Racing?

Sequential Racing supplies performance-focused upgrades for GR platforms, offering proven solutions for enthusiasts who want real gains. This high-flow catless downpipe is ideal for unlocking the full potential of the GR Corolla engine.

• Maximum performance and turbo efficiency
  
• Aggressive sound and improved response
  
• Simplified setup with integrated cat simulator

Upgrade your Toyota GR Corolla with this High-Flow Catless Downpipe and experience faster spool, increased power, and a more aggressive driving feel.