WARNING: This product can expose you to chemicals that are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information, visit www.P65warnings.ca.gov.The APR 4" Turbocharger Inlet System (CI100038) is the single most important induction upgrade for the Audi RS3 and TT RS (2.5TFSI EVO). By eliminating the most restrictive point in the factory intake tract—the turbocharger inlet pipe—this system provides a massive 45% increase in airflow over stock components. When paired with the optional APR Intake Filter, that gain jumps to an incredible 60%, ensuring the 5-cylinder engine is never starved of air, even at extreme power levels.
The system features a massive 4-inch carbon fiber tube mated to an organically shaped cast aluminum turbo inlet. This design is engineered to maintain the largest possible cross-sectional area from the intake all the way to the turbo compressor cover, significantly outperforming traditional tapering designs. To ensure compatibility with future power goals, the system uses interlocking adapter rings that provide a port-matched entrance to the stock turbo or larger hybrid upgrades. A stainless-steel heat shield and external PCV pipe complete the package, ensuring performance is matched by durability and proper engine function.
Features:
- Unrivaled Flow: Outflows factory components by 45% alone, and up to 60% when combined with the APR Intake Filter.
- Massive 4" Construction: Uses high-gloss carbon fiber and cast aluminum to provide the largest possible volume for incoming air.
- Hybrid Turbo Ready: Includes interlocking adapter rings for a port-matched fit; larger rings are available separately for hybrid turbos.
- Thermal Protection: Includes a thick stainless-steel heat shield to protect the intake tract from the intense heat of the turbo manifold.
- Versatile Design: Fully compatible with the factory airbox or the optional 9-inch long APR open-filter intake system.
- Performance Gains: Delivers measurable increases in horsepower and torque with significantly sharper throttle response.
- Aggressive Sound: Dramatically enhances the iconic 5-cylinder turbo induction and diverter valve sounds.
Product Contains:
- (1) 4" Cast Aluminum Turbo Inlet Pipe
- (1) 4" Carbon Fiber Rear Intake Tube
- (1) Stainless Steel Turbo Heat Shield
- (1) Stainless Steel PCV Pipe & Hardware
- (1) Set of Interlocking Port-Matched Adapter Rings
Important Fitment Note: This system is for Left-Hand Drive (LHD) vehicles only. For 2019+ North American models, the APR DV Adapter (CI100038-G) is required for installation. For maximum gains, this should be paired with the APR Open Intake Filter System.
Warranty: This product is supported by a Manufacturer's Warranty. Note: Manufacturer warranty terms are subject to change.
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