Introduction to Performance Air Intakes for the Acura RLX

The Acura RLX, renowned for its blend of luxury and performance, offers drivers a smooth and powerful driving experience. However, for automotive enthusiasts seeking to enhance their RLX's performance further, upgrading the air intake system is one of the most effective and popular modifications. Performance air intakes improve airflow to the engine, which can result in increased horsepower, improved throttle response, and even better fuel efficiency.

In this comprehensive guide, we will explore everything you need to know about installing performance air intakes on your Acura RLX. From understanding the benefits and types of intakes to a step-by-step installation process and maintenance tips, this article serves as your go-to resource for maximizing your RLX’s potential.

Why Upgrade Your Acura RLX’s Air Intake System?

The air intake system plays a crucial role in your vehicle’s engine performance. It filters the air entering the engine and ensures that the combustion process receives a steady supply of oxygen-rich air. Stock intake systems are designed with a balance of cost, noise reduction, and emissions regulation in mind, which sometimes limits their efficiency.

  • Increased Horsepower and Torque: Performance air intakes allow a greater volume of air to enter the engine, supporting more efficient combustion and producing more power.
  • Enhanced Throttle Response: With improved airflow, the engine can respond quicker to accelerator inputs, providing a sportier and more engaging driving experience.
  • Improved Fuel Efficiency: Better combustion efficiency can lead to improved fuel economy under certain driving conditions.
  • Engine Sound Enhancement: Many enthusiasts appreciate the more aggressive induction sound that comes from performance intakes.
  • Easy Installation and Cost-Effectiveness: Compared to other performance upgrades like turbochargers or engine tuning, air intake kits are relatively affordable and easier to install.

Types of Performance Air Intakes for the Acura RLX

When selecting a performance air intake for your RLX, it’s essential to understand the different types available, as each offers unique benefits and considerations.

Cold Air Intakes (CAI)

Cold air intakes are designed to draw cooler air from outside the engine bay, where temperatures are lower. Cooler air is denser and contains more oxygen, which can enhance combustion efficiency and performance.

  • Pros: Significant potential horsepower gains, cooler air supply, improved throttle response.
  • Cons: Installation can be more complex due to routing outside the engine bay; risk of water ingestion if not properly designed.

Short Ram Intakes (SRI)

Short ram intakes replace the stock airbox with a shorter, more direct intake tube inside the engine bay. They generally provide improved airflow while being easier to install.

  • Pros: Easier installation, improved airflow, less exposure to water.
  • Cons: Intake air temperature may be higher, potentially limiting performance gains.

High-Flow Air Filters

Some enthusiasts opt to upgrade only the air filter to a high-flow variant while retaining the stock intake system. This option is the most cost-effective but yields smaller performance improvements.

Choosing the Right Performance Air Intake for Your Acura RLX

Several factors should influence your choice of air intake system:

  • Driving Goals: Are you looking for maximum horsepower gains, improved fuel economy, or enhanced sound?
  • Installation Complexity: Consider your mechanical skills or whether you will seek professional installation.
  • Budget: Performance air intakes vary widely in price; set a budget that balances cost and benefits.
  • Warranty and Emissions Compliance: Ensure the intake system is compatible with your vehicle’s warranty and local emissions regulations.

Several reputable aftermarket manufacturers offer performance air intakes tailored for the Acura RLX. Some of the top brands include:

  • K&N Engineering: Known for their high-quality reusable air filters and cold air intake systems with excellent filtration efficiency and power gains.
  • Injen Technology: Offers a variety of cold air and short ram intakes engineered specifically for luxury and performance vehicles.
  • AEM Induction Systems: Provides advanced intake systems designed for maximum airflow and durability.
  • GrimmSpeed: Popular for performance parts with a strong reputation in the Acura and Honda communities.

Tools and Materials Needed for Installation

Before beginning the installation, gather the following tools and materials to ensure a smooth process:

  • Screwdrivers (Phillips and flathead)
  • Socket wrench set with appropriate sizes
  • Ratchet and extension bars
  • Torx drivers (if applicable)
  • New performance air intake kit (including hoses, clamps, and filter)
  • Gloves and safety glasses
  • Shop towels or rags
  • Torque wrench (optional but recommended)

Step-by-Step Guide to Installing a Performance Air Intake on the Acura RLX

Installing a performance air intake on your RLX can be accomplished with basic mechanical skills. Follow these steps carefully to ensure proper installation and optimal performance.

Step 1: Preparation and Safety

  • Park the vehicle on a flat, stable surface and engage the parking brake.
  • Allow the engine to cool completely to avoid burns.
  • Disconnect the negative battery terminal to prevent electrical shorts.
  • Wear gloves and safety glasses to protect yourself.

Step 2: Remove the Stock Air Intake System

  • Locate the factory air intake assembly, typically consisting of the airbox, intake tube, and filter.
  • Loosen clamps securing the intake tube to the throttle body and airbox.
  • Disconnect any sensors connected to the intake assembly, such as the mass airflow (MAF) sensor.
  • Remove the air filter housing and intake tube carefully.
  • Inspect the area for debris or damage before proceeding.

Step 3: Install the New Intake Components

  • Assemble the new intake system as per the manufacturer’s instructions, ensuring all clamps and couplings are secure.
  • Install the new air filter onto the intake tube.
  • Attach the intake tube to the throttle body and secure it with clamps.
  • Reconnect any sensors that were disconnected, taking care not to damage wiring.
  • Ensure the intake is routed properly to avoid contact with hot engine components or moving parts.

Step 4: Final Checks and Reassembly

  • Double-check all clamps and connections for tightness.
  • Reattach the negative battery terminal.
  • Start the engine and listen for any unusual noises such as air leaks or rattles.
  • Verify the check engine light does not illuminate; if it does, recheck sensor connections.
  • Test drive the vehicle to assess throttle response and performance improvements.

Troubleshooting Common Installation Issues

Even with careful installation, some common issues may arise:

  • Check Engine Light: Often triggered by MAF sensor disconnection or improper installation. Recheck sensor connections and ensure no vacuum leaks.
  • Air Filter Noise: Excessive intake noise may require repositioning the intake or adding heat shields.
  • Water Ingestion: Particularly with cold air intakes, avoid driving through deep water to prevent hydrolock.
  • Poor Fitment or Rattling: Ensure all mounting points are secure and use provided brackets or vibration isolators.

Maintenance Tips for Performance Air Intakes

Proper maintenance of your performance air intake is essential to sustain performance gains and engine health.

  • Regular Cleaning: Clean reusable air filters every 30,000 to 50,000 miles or sooner if driving in dusty conditions. Use manufacturer-recommended cleaning kits.
  • Inspect for Damage: Periodically check the intake tubing and connections for cracks, wear, or looseness.
  • Replace Filters When Needed: Replace non-reusable filters as specified by the manufacturer.
  • Check for Debris: Make sure the air intake scoop or snorkel remains free of leaves, dirt, or insects.

Additional Performance Upgrades to Complement Your Air Intake

For those seeking to maximize their Acura RLX’s performance beyond the air intake upgrade, consider the following complementary modifications:

  • Performance Exhaust Systems: Improve exhaust flow to complement increased intake airflow for better power gains.
  • ECU Tuning: Recalibrate the engine control unit to optimize fuel and ignition timing in line with intake and exhaust modifications.
  • High-Performance Spark Plugs: Ensure efficient combustion with upgraded ignition components.
  • Suspension and Brake Upgrades: Enhance handling and stopping power to match the improved engine performance.

Before installing any aftermarket performance parts, it is critical to understand their impact on your vehicle’s warranty and compliance with local laws.

  • Emissions Compliance: Some air intake systems may not be CARB (California Air Resources Board) approved, which is mandatory in certain states.
  • Warranty Impact: While many manufacturers honor warranties when aftermarket parts are installed, damage caused by these parts may not be covered.
  • Insurance Implications: Notify your insurer of any modifications to avoid complications in claims processing.

Conclusion

Upgrading your Acura RLX with a performance air intake is a straightforward and effective way to unlock additional power, improve throttle response, and enhance the overall driving experience. By choosing the right intake system, following proper installation procedures, and maintaining your modifications carefully, you can enjoy long-lasting benefits from this popular upgrade.

Whether you are a seasoned automotive enthusiast or a first-time modifier, Everyday Acura’s guide equips you with the knowledge and confidence needed to make informed decisions and get the most from your Acura RLX.

For more detailed reviews and recommendations on specific air intake kits and other performance parts, visit Everyday Acura and join our community of Acura enthusiasts.