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The Mitsubishi Lancer Evolution IX, commonly known as the Evo 9, is a performance icon among car enthusiasts. One of the most effective modifications to increase horsepower is the installation of a cold air intake system. In this guide, we will walk you through the step-by-step process of installing the Injen Evolution cold air intake, which can yield up to 10 horsepower gains.
Why Upgrade to a Cold Air Intake?
Upgrading to a cold air intake system offers several benefits beyond just horsepower gains. Here are a few reasons why you should consider this modification:
- Improved Engine Performance: A cold air intake allows for better airflow, resulting in increased engine efficiency.
- Enhanced Throttle Response: With more air entering the engine, throttle response becomes quicker and more responsive.
- Better Fuel Efficiency: Improved airflow can lead to better fuel combustion, potentially increasing miles per gallon.
- Unique Engine Sound: Cold air intakes often provide a more aggressive engine sound, enhancing the driving experience.
Tools and Materials Needed
Before you begin the installation, gather the following tools and materials:
- Injen Evolution Cold Air Intake Kit
- Socket set
- Wrenches
- Flathead screwdriver
- Phillips screwdriver
- Torque wrench
- Rubber gloves (optional)
- Safety glasses
Step-by-Step Installation Process
Step 1: Preparation
Before starting the installation, make sure the engine is cool and the vehicle is parked on a flat surface. Disconnect the negative battery terminal to prevent any electrical issues during the installation.
Step 2: Remove the Stock Air Intake
Begin by removing the stock air intake system. Follow these sub-steps:
- Locate the air intake box and loosen the clamps holding the intake tube.
- Disconnect any sensors or hoses attached to the stock intake.
- Remove the air filter and the air intake tube from the engine bay.
- Take out the air intake box by unbolting it from its mounting points.
Step 3: Install the Injen Evolution Cold Air Intake
Now it’s time to install the new cold air intake. Follow these steps:
- Position the Injen intake tube in place and secure it to the throttle body using the provided clamps.
- Attach the air filter to the end of the intake tube, ensuring it is snug and secure.
- Reinstall any sensors or hoses that were disconnected during the removal of the stock intake.
- Ensure all connections are tight and secure, and that there are no leaks.
Step 4: Reassemble and Check Everything
Once the new intake is in place, reassemble any components that were removed. Double-check all connections, ensuring everything is secure and properly installed.
Step 5: Reconnect the Battery and Test
Reconnect the negative battery terminal and start the engine. Listen for any unusual sounds and check for leaks around the intake system. Take the car for a test drive to experience the improved performance.
Expected Results
After completing the installation, you can expect to see an increase in horsepower of up to 10 HP. Additionally, you may notice improved throttle response and a more aggressive engine sound. It’s essential to monitor the performance and ensure everything is functioning correctly.
Maintenance Tips
To keep your cold air intake performing at its best, consider the following maintenance tips:
- Regular Cleaning: Clean the air filter regularly to prevent dirt buildup and ensure optimal airflow.
- Inspect Connections: Periodically check all connections for tightness and signs of wear.
- Monitor Engine Performance: Keep an eye on engine performance and address any issues promptly.
Conclusion
Installing the Injen Evolution cold air intake on your Evo 9 is a straightforward process that can yield significant performance gains. With the right tools and a little patience, you can enhance your vehicle’s performance and enjoy the benefits of improved airflow. Follow this guide, and you’ll be on your way to experiencing the full potential of your Mitsubishi Lancer Evolution IX.