APR Carbon Fiber Intake System - 4M/9Y 4.0T CI100056D

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Specifications:

BrandAPR
Part NumberCI100056D
GTIN00810009934899
Air Box TypeClosed
Filter ColorRed
Emission Code7
Filter MaterialPleated Cotton Gauze
Product TypeIntake Systems
VersionIntake System - 4.0t

Specifications:

Description:

The Ultimate Intake System for the 4.0T EA825 V8 SUV EngineOur 4.0T EA825 V8 Intake System for SUV models offers an OEM+ appearance upgrade with an intake plenum (the air chamber prior to the engine's cylinders) in a stunning matte forged carbon finish that enhances airflow by up to 22% compared to stock. The enhanced turbocharger inlets feature a bell mouth profile that directly connects to the factory turbocharger, promoting optimal flow and facilitating easy upgrades to future turbos. The system incorporates a proprietary performance intake filter with a high-flow cotton gauze filtration material and a flow-bench optimized design that significantly improves airflow through the system and into the intake plenum. This filter surpasses stock performance by up to 12% and reduces pressure drop at the same flow rates, alleviating the turbochargers’ strain and maximizing overall performance. Additionally, it sharpens throttle and turbocharger response, resulting in a more responsive driving experience. This intake system is the pinnacle of performance for the 4.0T EA825 V8 engine, powering SQ7, SQ8, RSQ8, Bentley Bentayga, Porsche Cayenne, and Lamborghini Urus.The DesignThe 4.0T SUV’s engine bay design is compact. The factory employs a dual inlet design that feeds into an airbox positioned beneath the intake filter cover, which then feeds into a multi-part turbocharger plenum. Airflow is directed 180 degrees into turbo inlet adapters and both turbochargers.The intake filter underwent optimization on the flow bench to maximize airflow while utilizing a filter media that provided adequate filtration and extended filter life. Through several design revisions verified on the flow bench, we increased CFM by up to 12% over the stock unit! The overall shape and design of the filter resemble the factory unit due to its location, but it internally features several enhancements to enhance airflow beyond simply changing filter media. Next, the turbocharger plenum was upgraded. The factory plenum is small and features a flow-restricting split-body design. We eliminated this and replaced it with a large, organically shaped single-body design to promote airflow. Forged Carbon fiber was used not only for its aesthetic appeal but also because it allows for thin walls and complex geometry to maximize cross-sectional area. This aids in airflow and reduces pressure drop. The APR plenum is significantly larger than the factory unit in various areas and is a single-piece design that extends past the integrated PCV and EVAP bungs and runs all the way down to the new billet aluminum high-flow turbocharger inlets - less restriction, more airflow to the engine.The billet aluminum turbocharger inlets feature a bell-mouth profile to promote airflow. If upgrading to larger turbochargers, the inlets can be modified or replaced to match the compressor cover on the new turbochargers. Furthermore, this system integrates PCV and EVAP bungs for a seamless installation. New EVAP jet pumps were designed and supplied for proper emission control despite all this power increase. All these improvements result in an upgrade that’s worthy of the 4.0T’s engine bay. The intake system allows the engine to breathe more freely, maximizing performance and giving a subtle but enhanced burliness to the engine note that’s sure to delight the discerning ear.

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Buyer's Guide

Air Intake Buyer's Guide

An aftermarket air intake helps your engine breathe better so you can make more power. Stock intake systems are designed to balance noise, cost, and filtration rather than maximize airflow. An aftermarket intake prioritizes flow, allowing more air to reach the engine and supporting higher horsepower. This guide covers how air intakes work, what performance gains to expect, and what to verify before purchasing.

Why Upgrade Your Air Intake

Reduced Airflow Restriction: An aftermarket intake with a larger, less restrictive filter increases the volume of air your engine can draw in, directly supporting more power.
Cooler Intake Temperatures: Positioning your air filter away from hot components in your engine bay allows the engine to draw in denser, cooler air, increasing maximum power.
Improved Throttle Response: Shortening the intake path or straightening the piping can provide a more direct path for air to your engine, improving throttle response.
Induction Noise: Cone filters produce an aggressive induction sound as a byproduct of increased airflow, a characteristic many enthusiasts find as appealing as the performance gain itself.

Performance Gains

From a cold air intake alone on a naturally aspirated vehicle, expect somewhere in the range of 5–15 horsepower. Pair your intake with an exhaust, headers, and a tune, and you can see much more meaningful power improvements.

Vehicles with a turbocharger or supercharger typically see greater benefit from intake upgrades compared to naturally aspirated vehicles. This is because a turbocharger or supercharger moves a much larger volume of air than a naturally aspirated engine, so reducing intake restriction has a proportionally larger effect on the power the engine can produce.

Intake Types

Short Ram Intake

A short ram intake replaces the factory airbox with a cone filter positioned close to the throttle body, providing a short and direct path for air to reach the engine. Short ram intakes are simple, affordable, and easy to install, making them a great choice for tight engine bays and budget builds. The downside of a short ram intake is that they typically draw in warmer air, which reduces maximum power compared to a cold air intake.

Cold Air Intake

A cold air intake relocates the filter away from hot engine bay components to draw in cooler, denser air. Since cooler air contains more oxygen per volume, this supports more power. Most cold air intakes position the filter within the engine bay but away from heat sources. More serious builds will route the filter into the fender or bumper area to access the coldest possible air. Many cold air intakes include an intake box or heat shield that isolates the filter from engine heat and protects it from debris. Cold air intakes are the preferred choice when chasing maximum performance.

Snorkel

A snorkel relocates the intake point from the engine bay to near the roofline. This provides cooler air and protection against water ingestion when driving through deep water. Snorkels are most common on off-road vehicles and are rarely seen on street or performance builds.

Filter Materials

Different filter materials have different qualities and maintenance requirements. Read our Air Filter Buyer's Guide for a full breakdown.

Compatibility

Most aftermarket air intake systems are vehicle specific. Always confirm that your intake fits your specific year, make, model, and trim. If you are sourcing intake piping separately rather than buying a complete kit, plan your routing carefully before purchasing to avoid clearance issues during installation.

Conclusion

An air intake is one of the most accessible performance modifications available. It's straightforward to install, provides meaningful power improvement, and creates a strong foundation for further modifications down the line. For most builds, a cold air intake provides the best balance of performance and value. If budget or engine bay space is a constraint, consider a short ram intake which will deliver improved throttle response. Either way, pairing your intake with an exhaust system and a tune will multiply the gains well beyond what the intake delivers on its own. You can find all the parts you need and plan your build on RideBuilder.