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The Subaru WRX is a beloved performance vehicle, known for its powerful engine and rally-inspired design. One popular modification among enthusiasts is the installation of a cold air intake system. This upgrade can lead to a significant increase in horsepower, often around 10 HP, while also improving throttle response and engine sound. In this guide, we will walk you through the step-by-step process of installing a cold air intake in your Subaru WRX.
What You Will Need
- Cold air intake kit specific to Subaru WRX
- Socket set
- Screwdriver set
- Torque wrench
- Cloth or rag
- Safety glasses
- Gloves
Before you begin, ensure you have all the necessary tools and parts ready. A cold air intake kit typically includes the intake pipe, filter, and all necessary mounting hardware. It’s essential to follow the manufacturer’s instructions specific to the kit you choose.
Step 1: Prepare Your Vehicle
Start by parking your Subaru WRX on a flat surface and turning off the engine. Allow it to cool down if it has been running. Engage the parking brake for safety.
Step 2: Remove the Stock Intake System
Open the hood and locate the stock air intake system. This usually consists of an airbox, intake pipe, and filter. Begin by disconnecting the negative battery terminal to prevent any electrical issues.
- Remove any screws or clips securing the airbox.
- Disconnect the intake pipe from the throttle body.
- Take out the air filter from the airbox.
- Carefully remove the entire air intake assembly from the engine bay.
Make sure to keep all screws and clips in a safe place, as you may need them later for the new installation.
Step 3: Install the New Cold Air Intake
Now it’s time to install your new cold air intake. Begin by laying out all the components of your cold air intake kit. Refer to the manufacturer’s instructions for specific details, but generally, the process involves the following steps:
- Attach the new intake pipe to the throttle body, ensuring it fits snugly.
- Secure the pipe using the provided clamps.
- Install the new air filter onto the end of the intake pipe.
- Mount the intake assembly securely in place using the original screws or clips if applicable.
Be sure to double-check that all connections are tight and that there are no leaks in the system.
Step 4: Reconnect the Battery and Start the Engine
Once the new intake is installed, reconnect the negative battery terminal. Start the engine and listen for any unusual sounds. The engine should run smoothly without any check engine lights appearing on the dashboard.
Step 5: Test Drive Your WRX
After ensuring everything is functioning correctly, take your Subaru WRX for a test drive. Pay attention to the throttle response and the sound of the engine. You should notice a more aggressive tone and potentially improved acceleration.
Maintenance Tips
To keep your cold air intake functioning optimally, follow these maintenance tips:
- Regularly check the air filter and clean or replace it as needed.
- Inspect all connections and hoses for wear or damage.
- Monitor engine performance and be aware of any changes.
With proper care, your cold air intake can enhance your Subaru WRX’s performance for years to come.
Conclusion
Installing a cold air intake in your Subaru WRX is a straightforward process that can yield impressive performance benefits. By following this step-by-step guide, you can achieve a 10 HP increase and enjoy a more engaging driving experience. Always remember to consult your specific intake kit’s instructions for the best results and to ensure proper installation.