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The Subaru WRX STI is a high-performance vehicle known for its impressive power and handling. However, with great performance comes the potential for problems, one of which is intake fouling. Installing a catch can is an effective way to prevent this issue. In this guide, we will walk you through the installation of a catch can for your Subaru WRX STI, ensuring you can maintain optimal engine performance.
What is a Catch Can?
A catch can is a device that captures oil vapors and other contaminants from the engine’s crankcase ventilation system before they can enter the intake manifold. This helps to keep the intake system clean and free from carbon buildup, which can lead to performance issues.
Why Install a Catch Can?
Installing a catch can on your Subaru WRX STI offers several benefits:
- Prevents intake fouling
- Reduces carbon buildup on intake valves
- Improves engine performance
- Enhances engine longevity
Tools and Materials Needed
Before starting the installation, gather the following tools and materials:
- Catch can kit
- Socket set
- Wrenches
- Drill and drill bits
- Hose clamps
- Vacuum line
- Zip ties
- Safety goggles
Step-by-Step Installation Guide
Step 1: Prepare Your Vehicle
Before you begin, make sure the vehicle is parked on a level surface and the engine is cool. Disconnect the negative battery terminal to prevent any electrical issues during the installation.
Step 2: Locate the Crankcase Ventilation System
Identify the crankcase ventilation system in your WRX STI. This is typically located near the engine bay and includes hoses connected to the intake manifold.
Step 3: Remove the OEM Hose
Carefully remove the OEM hose connected to the crankcase ventilation system. You may need to use a wrench or socket to loosen any clamps holding the hose in place.
Step 4: Install the Catch Can
Mount the catch can in a suitable location in the engine bay. Ensure it is secure and away from any moving parts. Use zip ties or brackets as needed to hold it in place.
Step 5: Connect the Hoses
Connect the hoses from the catch can to the crankcase ventilation system. Make sure to use hose clamps to secure the connections, preventing any leaks.
Step 6: Reconnect the Battery
Once everything is connected, reconnect the negative battery terminal. Double-check all connections to ensure they are tight and secure.
Step 7: Test the Installation
Start your engine and let it idle for a few minutes. Check for any leaks around the catch can and hoses. If everything looks good, you are ready to hit the road!
Maintenance Tips
To ensure your catch can functions effectively, it’s important to perform regular maintenance:
- Check the catch can level regularly and empty it as needed.
- Inspect hoses for wear and tear.
- Clean the catch can periodically to prevent buildup.
Conclusion
Installing a catch can on your Subaru WRX STI is a straightforward process that can significantly enhance your vehicle’s performance and longevity. With a small investment of around $100, you can prevent intake fouling and keep your engine running smoothly. Follow this guide for a successful installation, and enjoy the benefits of a cleaner intake system.