The APR Full Carbon Fiber Intake System for the Audi RS4 and RS5 (B9) 2.9T EA839!
This is the ultimate intake upgrade for the Audi RS4 and RS5 (B9). It flows 36% more than stock, reduces pressure drop, and improves linearization across the turbos. This directly translates to +19 AWHP and +17 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 inlets. 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 turbochargers, looks sexy under the hood with the gorgeous carbon fiber design, and enhances the sound of the engine.
Features and Benefits
- Full intake system: Inlet, airbox, filter, and inlet piping
- +19 AWHP & +17 AWFT-LBS measured over stock (APR Stage 1 93)
- Flows 36% more than stock
- Reduced pressure drop at the turbo inlets
- Improved linearization across the turbos
- Enhanced engine sound
- Carbon fiber construction
- Turbos spool faster
- Turbos operate more efficiently
- Massive 7” x 7” filter with a 4” outlet and 5.5” frontal inlet
- High flow and washable pleated cotton gauze filter material
- Airbox has additional flow paths faced away from the engine
- Inlet piping diameter is maximized from the 4” filter all the way to the turbochargers
- Inlet piping addresses system restriction, unlike competitive airbox systems that are compatible with factory inlet piping
- Billet turbo adapter rings make fitting this system to larger turbos possible
- New OEM gaskets included
- Emissions friendly
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 inlets 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.
The airbox is fed from an inlet scoop that maximizes the flow path into the airbox. The airbox has cutouts allowing for additional flow paths directed away from the engine. This keeps air temps down, and increases sound without it being overbearing. The filter is massive as well. A big filter is desirable as increasing filtered surface area keeps the filter breathing easily for many miles as it filters dirt, dust, and particles. It measures 7” by 7” with a 5.5” frontal inlet, and a 4” outlet. The filter media is a washable pleated cotton gauze that can be cleaned for extended life, or replaced with ease.
Our kit includes everything you need to bolt on and go. No new tuning is needed to run this product, and the product is emissions friendly. We include all new OEM gaskets and all the nuts, bolts, and clamps needed for an easy install. Lastly, thanks to our billet turbo inlet adapters, this is the only intake you’ll ever need. Should you later upgrade your turbo, new, larger adapters can be installed to adapt to the larger inlets simply by swapping out the billet adapters!
The factory intake simply can’t match the performance of ours. The factory system flows a maximum of 484 CFM at 28” in of H2O. We improve this by 36% as our full intake system flows 658 CFM! We’ve reduced pressure drop across the system and improved linearization across the turbos. The turbos spool faster, and operate in a more efficient region of the compressor map. This directly translates to more power and torque you can feel. On our Stage 1 (93) RS5 we saw an improvement of 19 AWHP and 17 AWFT-LBS of torque simply by installing our intake system!
Horsepower and Torque Dyno Charts
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Only use fuel equal to or higher than specified. Never use a lower octane fuel. Always follow our fuel guide, especially with race fuel and Ethanol, where available. Dynos are for reference only. Results will vary. Contributing factors include the vehicle condition, vehicle setup, dyno type, dyno setup, environmental factors, fuel quality, and more. When describing fuels, the North American Region (NAR) uses the Anti-Knock Index (AKI), (RON+MON)/2, or (R+M)/2. The Rest of the World (ROW) uses RON. RON is Research Octane Number and MON is Motor Octane Number.
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