The APR CI100050 intake is a complete high-flow carbon-fiber airbox, filter, coupler, and cast-aluminum turbo-inlet system for the confirmed 2021–2025 Audi C8 RS6 Avant and RS7 Sportback with the 4.0T engine.
Confirmed applications
- 2021–2025 Audi C8 RS6 Avant 4.0T
- 2021–2025 Audi C8 RS7 Sportback 4.0T
No 2020, 2026 or newer vehicle, RS Q8, other Audi platform, or unlisted engine is represented by this listing. APR notes that systems built before August 23, 2024 were designed to fit directly only through model year 2022; earlier systems can be converted using APR's published update procedure and the required conversion parts. Confirm the exact vehicle and system configuration before installation.
Manufacturer-published design highlights
- Carbon-fiber airbox with outlets that APR measures as 52% larger than stock
- Cast-aluminum turbo inlets that APR measures as 93% larger than stock
- Billet adapter rings for compatible larger-turbo configurations
- High-flow, washable, reusable pleated cotton-gauze filter
- Smooth high-flow couplers between the airbox and turbocharger inlets
- APR reports a 50% reduction in pressure drop at the turbo inlets compared with the original system
Manufacturer test result
APR reports an additional 47 all-wheel horsepower and 38 lb-ft of all-wheel torque on its Stage 1 93-octane RS6 test vehicle. This is a manufacturer test result, not a guaranteed result for every vehicle. Actual performance varies with calibration, fuel, supporting hardware, vehicle condition, installation, environment, and test method.
Installation and configuration
Professional installation is recommended. Verify the exact model year, intake revision, turbocharger inlet configuration, sensor connections, clamps, sealing surfaces, and current APR instructions before installation. Calibration and supporting hardware must match the complete vehicle build.
Emissions disclosure
APR assigns this product Emission Code 7. APR states that it is legal under the EPA Tampering Policy dated November 23, 2020 for on-street use in states that accept those federal provisions. APR also states that CI100050 is not legal for sale or use in California and that California Air Resources Board testing is pending. Confirm the laws that apply to the vehicle and destination before ordering or installation.
Warranty
Warranty eligibility, exclusions, proof-of-purchase requirements, and claim handling are governed by APR's current written warranty policy.