APR 18-25 Audi S4/S5/S5 Sportback B9 Carbon Fiber Intake System Part Number APR CI100043

This is the ultimate intake upgrade for the Audi S4 and S5 (B9). It flows 31% more than stock, reduces pressure drop, and improves turbocharger efficiency. This directly translates to +19 AWHP and +20 AWFT-LBS of torque on top of our Stage 1 (93) tune making this a simple upgrade for more power you can feel.Our system is a full upgrade as it replaces all of the intake components from the inlet scoop all the way to the turbo inlet. This is extremely important as focusing on the airbox alone does not address the main restrictions found in the factory intake system. Simply put, our system flows better than stock, makes more power, puts less strain on the turbocharger, looks sexy under the hood with the gorgeous carbon fiber design, and enhances the sound of the engine.The factory turbocharger inlet pipe is a big restriction point because it's small. It's common for most intake systems to only focus on the filter and airbox, but doing so only has minimal impact on performance. Furthermore, upgrading the turbocharger inlet pipe only has minimal impact on performance if it still necks down to with the factory or aftermarket intake airbox. We solve this by making our pipe as large as possible from the 4" filter outlet all the way to the turbocharger inlet in one piece! This minimizes pressure drop and increases flow through the system far better than a multi-piece solutions.Our system is made from carbon fiber and looks absolutely stunning under the hood. By using this material we are able to make the wall-thickness of the tubes smaller, maximizing the internal diameter, increasing performance even more! The material also allows us to make complex organic shapes necessary when working in a tight engine bay. Fits 2018-2024 Audi S4/S5/S5 Sportback

• Inlet piping addresses system restriction, unlike competitive airbox systems that are compatible with factory inlet piping
• Inlet piping diameter is maximized from the 4” filter all the way to the turbocharger
• Billet turbo adapter ring make fitting this system to a larger turbo possible
• Massive 7” x 7” filter with a 4” outlet and 5.5” frontal inlet
• Full intake system: Inlet, airbox, filter, and inlet piping
• High flow and washable pleated cotton gauze filter material
• Airbox has additional flow paths faced away from the engine
• +19 AWHP & +20 AWFT-LBS gain over stock (APR Stage 1 93)
• Reduced pressure drop at the turbo inlets
• Improved linearization across the turbos
• Turbos operate more efficiently
• Flows 31% more than stock
• Carbon fiber construction
• New OEM gaskets included
• Enhanced engine sound
• Turbos spool faster
• Emissions friendly

Upgrade your Audi S4 or S5 (B9) with the APR Carbon Fiber Intake System, designed to deliver significant performance improvements while enhancing the engine bay's aesthetics. Crafted from lightweight and durable carbon fiber, this full intake system replaces all factory components from the inlet scoop through to the turbo inlet, effectively eliminating major restrictions in the stock setup. The system's design ensures optimal airflow, with a large 4-inch diameter from the filter to the turbocharger inlet, minimizing pressure drops and increasing flow capacity by 31% over stock. This results in a measurable gain of +19 wheel horsepower and +20 ft-lbs of torque, especially noticeable when combined with our Stage 1 (93) tune. The robust construction and organic shapes of the carbon fiber components allow for a sleek, high-performance look that stands out under the hood.
The system includes a massive 7-inch by 7-inch washable pleated cotton gauze filter, providing high flow rates and easy maintenance. The inlet piping is engineered with a billet turbo adapter ring, allowing compatibility with larger turbos and ensuring a secure, leak-free fit. The high-flow airbox features additional flow paths that are directed away from the engine to optimize intake efficiency while reducing turbulence. This setup not only boosts power but also helps turbos spool faster and operate more efficiently, translating into a more responsive and aggressive driving experience.
Installation of this comprehensive intake system offers benefits beyond power gains. The improved airflow and reduced pressure drop contribute to better turbocharger efficiency, which can enhance overall engine longevity. The carbon fiber construction ensures a lightweight profile and complex organic shapes that fit seamlessly within the tight engine bay space. Additionally, the system produces an enhanced engine sound, adding to the driving appeal. This upgrade is emissions friendly and features OEM gaskets for a secure, factory-like fit. Please note that this product requires acknowledgment of CARB regulations and is not CARB-approved, making it ideal for those focused on performance and aesthetics without legal restrictions in certain regions.

Features:

• Addresses system restrictions with full inlet, airbox, filter, and piping replacement

• Maximized inlet piping diameter from filter to turbocharger for optimal flow

• Includes billet turbo adapter ring for larger turbo compatibility

• s a massive 7” x 7” washable pleated cotton gauze filter

• Constructed from lightweight, durable carbon fiber for high performance and aesthetic appeal

• Additional flow paths in the airbox direct airflow away from the engine

• Reduces pressure drop at turbo inlets by 31%, increasing efficiency

• Provides +19 AWHP and +20 AWFT-LBS torque gains over stock with Stage 1 (93) tune

• Allows turbos to spool faster and operate more efficiently

• Includes OEM gaskets for secure installation and leak prevention

• Enhances engine sound for a more aggressive driving experience

Fitments:
2018 Audi S4 Premium Plus
2018 Audi S4 Prestige
2018 Audi S5 Premium Plus
2018 Audi S5 Prestige
2018 Audi S5 Sportback Premium Plus
2018 Audi S5 Sportback Prestige
2019 Audi S4 Premium
2019 Audi S4 Premium Plus
2019 Audi S4 Prestige
2019 Audi S5 Premium
2019 Audi S5 Premium Plus
2019 Audi S5 Prestige
2019 Audi S5 Sportback Premium Plus
2019 Audi S5 Sportback Prestige
2020 Audi S4 Premium
2020 Audi S4 Premium Plus
2020 Audi S4 Prestige
2020 Audi S5 Premium
2020 Audi S5 Premium Plus
2020 Audi S5 Prestige
2020 Audi S5 Sportback Premium
2020 Audi S5 Sportback Premium Plus
2020 Audi S5 Sportback Prestige
2021 Audi S4 Premium
2021 Audi S4 Premium Plus
2021 Audi S4 Prestige
2021 Audi S5 Premium
2021 Audi S5 Premium Plus
2021 Audi S5 Prestige
2021 Audi S5 Sportback Premium
2021 Audi S5 Sportback Premium Plus
2021 Audi S5 Sportback Prestige
2022 Audi S4 Premium
2022 Audi S4 Premium Plus
2022 Audi S4 Prestige
2022 Audi S5 Premium
2022 Audi S5 Premium Plus
2022 Audi S5 Prestige
2022 Audi S5 Sportback Premium
2022 Audi S5 Sportback Premium Plus
2022 Audi S5 Sportback Prestige
2023 Audi S4 Premium
2023 Audi S4 Premium Plus
2023 Audi S4 Prestige
2023 Audi S5 Premium
2023 Audi S5 Premium Plus
2023 Audi S5 Prestige
2023 Audi S5 Sportback Premium
2023 Audi S5 Sportback Premium Plus
2023 Audi S5 Sportback Prestige
2024 Audi S4 Premium
2024 Audi S4 Premium Plus
2024 Audi S4 Prestige
2024 Audi S5 Premium
2024 Audi S5 Premium Plus
2024 Audi S5 Prestige
2024 Audi S5 Sportback Premium
2024 Audi S5 Sportback Premium Plus
2024 Audi S5 Sportback Prestige

Air Freight Prohibited: false
Not Carb Approved: true
Carb Acknowledgement Required: true
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Regular Stock: t
Units Per Sku: 1