APR 18-25 Audi S4/S5/S5 Sportback (B9) 3.0T PEX Intake System

Introducing the APR Full Intake System for the Audi S4 and S5 (B9) 3.0T EA839APR is proud to unveil the Full Intake System for the Audi S4 and S5 (B9) 3.0T EA839—an all-in-one solution designed to deliver maximum airflow, enhanced turbocharger efficiency, and real, measurable performance gains.The APR Full Intake System is perfect for Audi enthusiasts seeking the ultimate intake upgrade. Unlike others that address only a portion of the intake system, requiring the inlets and outlets to neck down to the factory diameter for compatibility, this comprehensive solution replaces every component from the inlet scoop to the turbocharger inlet. This eliminates restrictions throughout the system, ensuring unmatched airflow and turbo performance with the largest inlet physically possible.Key to the system’s superior performance is its optimized design. Making the inlet as large as possible is the goal but space is extremely limited. By maximizing the internal diameter with thin-walled heat-resistant composite materials, APR achieves an impressive 31% more airflow compared to stock. This translates directly into improved turbocharger efficiency, faster spool times, and significant power gains, adding +19 AWHP and +20 AWFT-LBS of torque on our APR Stage 1 (93) equipped S4.Additionally, the APR Full Intake System is engineered with functionality, performance, and sound in mind. Fits 2018-2025 Audi S4/S5

• Massive Washable Filter: 7” x 7” pleated cotton gauze with a 5.5” frontal inlet and 4” outlet for superior filtration and performance.
• Complete System Replacement: Includes inlet scoop, airbox, filter, and turbo inlet pipe, eliminating all factory restrictions.
• Enhanced Turbocharger Efficiency: Reduces pressure drop, allowing the turbo to spool faster and operate more efficiently.
• High-Temperature Composite Turbo Inlet: Enables thin-wall tubing for maximum internal diameter and airflow.
• All-Inclusive Kit: Includes OEM gaskets, clamps, and hardware for an easy, bolt-on installation.
• Future-Proof Design: Billet turbo inlet adapter accommodates larger turbos with a simple swap.
• PEX Airbox: Heat-shield design with additional flow paths in low temperature zones.
• Emissions-Friendly: Requires no tuning and is compliant with emissions standards.
• Improved Engine Sound: Adds a sporty, refined tone without being overbearing.
• +19 AWHP & +20 AWFT-LBS Power Gains: Measured on our APR Stage 1 (93) SS.
• 31% More Airflow: Improved from 400 CFM (stock) to 525 CFM.

Upgrade your Audi S4 or S5 (B9) with the APR Full Intake System, designed specifically for models from 2018 to 2025. This comprehensive kit replaces every component from the inlet scoop to the turbocharger inlet, eliminating restrictions and maximizing airflow for improved turbocharger efficiency and power output. Crafted with high-temperature composite materials, the system features a large-diameter, heat-resistant turbo inlet pipe that enables the largest possible internal diameter within limited space, resulting in a 31% increase in airflow compared to stock. This translates into faster spool times, reduced pressure drop, and measurable gains of +19 AWHP and +20 AWFT-LBS on APR Stage 1 (93) tuned vehicles, providing a significant upgrade in performance and responsiveness.

The kit includes a massive washable filter measuring 7” x 7” with a pleated cotton gauze design, offering superior filtration and airflow. The all-in-one setup includes an inlet scoop, airbox, filter, and turbo inlet pipe, along with OEM gaskets, clamps, and hardware for straightforward bolt-on installation. The system's design ensures enhanced turbocharger operation while maintaining emissions compliance without requiring tuning. Its future-proof billet turbo inlet adapter allows easy accommodation of larger turbos, making this upgrade both practical and adaptable. Additionally, the PEX airbox features a heat-shield design with extra flow paths in low-temperature zones, contributing to improved engine sound with a sporty yet refined tone. Overall, the APR Full Intake System is an ideal upgrade for enthusiasts seeking maximum airflow, increased power, and improved turbo efficiency in a durable, easy-to-install package.

Features:

• Massive washable 7” x 7” pleated cotton gauze filter for superior filtration and airflow

• Complete system replacement of inlet scoop, airbox, filter, and turbo inlet pipe eliminates factory restrictions

• Optimized turbocharger efficiency with reduced pressure drop for faster spool times

• High-temperature composite turbo inlet pipe allows maximum internal diameter and airflow

• All-inclusive kit with OEM gaskets, clamps, and hardware for easy installation

• Future-proof billet turbo inlet adapter accommodates larger turbos with a simple swap

• PEX airbox with heat-shield design and additional flow paths in low-temperature zones

• Emissions-friendly design requiring no tuning and compliant with standards

• Enhanced engine sound with a sporty, refined tone

• Significant power gains of +19 AWHP and +20 AWFT-LBS measured on APR Stage 1 (93) tuned vehicles