Performance High-Flow Catless/Catted Downpipe Set - Porsche Cayenne S 2.9T 2018-2023

Upgrade the exhaust flow, turbo response, and sound of your Porsche Cayenne S 2.9T with this Performance High-Flow Catless/Catted Downpipe Set. Designed for the twin-turbo V6 platform, these downpipes replace the restrictive factory catalytic sections to improve exhaust flow and reduce backpressure.

Available in both Catless and High-Flow Catted configurations, this system provides options for performance-focused street builds or motorsport applications. The left and right downpipes are manufactured from durable stainless steel and retain factory-style mounting and oxygen-sensor locations.

Key Specs

Key Features

• High-Flow Performance Design: Replaces the restrictive factory catalytic sections to provide a freer-flowing exhaust path.
• Catless & High-Flow Catted Options: Choose between a catless setup for maximum exhaust flow or a high-flow catted configuration for a more street-oriented setup.
• Improved Turbo Response: Reduced exhaust restriction can improve turbo spool characteristics and throttle response, especially when combined with appropriate ECU tuning.
• T304 Stainless Steel Construction: Built from durable stainless steel designed to withstand high exhaust temperatures and resist corrosion.
• More Aggressive Exhaust Character: Provides a deeper and more pronounced exhaust tone with increased turbo sound compared with the factory setup.
• OEM-Style O2 Sensor Locations: Pre-installed oxygen-sensor bungs allow the factory sensors to be retained during installation.
• Direct Bolt-On Fitment: Designed around factory mounting locations for straightforward installation without major exhaust-system modification.
• Stock & Aftermarket Exhaust Compatibility: Designed to work with the factory exhaust system as well as compatible aftermarket exhaust configurations.

Configuration Options

Catless: Provides the least restrictive exhaust path for maximum flow and is intended primarily for off-road or motorsport applications where permitted.

High-Flow Catted: Retains a performance-oriented catalytic converter while providing greater exhaust flow than the factory catalytic section.

Vehicle Fitment

• Porsche Cayenne S 2.9T – 2018
• Porsche Cayenne S 2.9T – 2019
• Porsche Cayenne S 2.9T – 2020
• Porsche Cayenne S 2.9T – 2021
• Porsche Cayenne S 2.9T – 2022
• Porsche Cayenne S 2.9T – 2023

Fitment Note: The supplied product information also references certain “Cayenne Turbo 2.9T platform variants.” Exact compatibility with any model other than the Cayenne S 2.9T should be verified before ordering.

Package Includes

• 1 × Left Performance Downpipe
• 1 × Right Performance Downpipe
• Pre-installed O2 Sensor Bungs
• Installation Hardware, where applicable

Installation Notes

Professional installation is recommended. ECU calibration may be required depending on the selected configuration and vehicle setup. OPF/GPF compatibility should also be confirmed for vehicles equipped with regional emissions equipment.

Important: Catless exhaust components may not be legal for public-road use in all regions and may trigger a check-engine light without appropriate calibration. Verify local emissions regulations before installation.

Care Guide

Routine Inspection: Periodically inspect the downpipes, flanges, welds, mounting hardware, and oxygen-sensor connections.

Check for Exhaust Leaks: Recheck all connections after installation and periodically during use to ensure the system remains properly sealed.

Allow the System to Cool: Never clean or inspect exhaust components immediately after driving. Allow the system to cool completely before handling.

Keep Stainless Steel Clean: Remove road grime and contaminants with suitable automotive metal-cleaning products. Avoid highly abrasive cleaners that may damage the surface.

• Catless or High-Flow Catted Options
• Left & Right Downpipe Set
• T304 Stainless Steel Construction
• High-Flow Exhaust Design
• OEM O2 Sensor Locations
• Improved Turbo Response
• More Aggressive Exhaust Sound
• Direct Bolt-On Fitment