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APR's Carbon Fiber Cold Air Intake for the 2018-2024 Audi RS4/RS5 2.9T B9 is the definitive airflow upgrade for the EA839 biturbo V6. By replacing the entire factory intake tract in a single piece of continuous carbon fiber - from the inlet scoop all the way to the turbocharger inlets - APR eliminates every restriction the factory design imposes and achieves a 36% increase in airflow over stock, directly translating to +19 AWHP and +17 AWFT-LBS of torque on an APR Stage 1 (93) tune. The one-piece carbon fiber design is only possible because APR engineered the pipe to maintain the full 4" diameter from the filter outlet to the turbo inlets - a geometry no multi-piece system can match. A massive 7"×7" washable pleated cotton gauze filter provides excellent filtration with minimal pressure drop, and the included billet turbo inlet adapters ensure this remains the only intake your RS4 or RS5 will ever need, supporting even larger turbocharger upgrades down the road.
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