APR CI100067 Cold Air Intake System for Audi 2.9T RS4/RS5 B9

The APR CI100067 Cold Air Intake System is a complete performance upgrade designed specifically for the 2.9T twin-turbo engine in B9 Audi RS4 and RS5 models. This comprehensive system replaces all factory air intake components with precision-engineered parts that dramatically improve airflow and unlock additional horsepower.

Performance Gains:

• 36% Increased Airflow: Flow rate improved from 484 CFM (stock) to 658 CFM for maximum engine breathing
• +19 HP & +17 FT-LBS Torque: Measured gains at all four wheels on APR Stage 1 (93 octane) tuned RS5
• Enhanced Turbocharger Efficiency: Reduced pressure drop allows turbos to spool faster and operate more efficiently
• Improved Engine Sound: Adds a refined, sporty tone without excessive loudness

Advanced Engineering Features:

• PEX Airbox Design: Heat-shield construction with strategic flow paths positioned in low-temperature zones for cooler, denser intake air
• High-Temperature Composite Turbo Inlet: Thin-wall construction maximizes internal diameter while withstanding extreme temperatures
• Billet Turbo Inlet Adapter: Future-proof design accommodates larger aftermarket turbos with a simple adapter swap
• Complete System Replacement: Includes inlet scoop, airbox, high-flow filter, and turbo inlet pipes to eliminate all factory restrictions

Installation & Compliance:

• Bolt-On Installation: All-inclusive kit with OEM gaskets, clamps, and hardware for straightforward installation
• Emissions Compliant: No tuning required and meets emissions standards
• Direct Fit: Engineered specifically for 2.9T RS4/RS5 (B9 chassis) applications

This professional-grade intake system represents a complete redesign of the factory intake path, delivering measurable performance improvements while maintaining reliability and drivability. Perfect for enthusiasts seeking maximum airflow without sacrificing build quality or compliance.