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The Subaru WRX is known for its performance and rally heritage. If you’re looking to enhance your WRX’s horsepower significantly, installing a Rotrex supercharger can be a game-changer. This guide will walk you through the step-by-step installation process, ensuring you achieve over 200 horsepower boost with precision and care.
Tools and Materials Needed
- Rotrex Supercharger Kit
- Basic Hand Tools (wrenches, sockets, screwdrivers)
- Torque Wrench
- Vacuum Pump
- Oil Catch Can
- Intercooler Piping
- Silicone Hoses
- Fuel System Upgrade (if necessary)
- ECU Tuning Software
Preparation Steps
Before beginning the installation, it’s essential to prepare your workspace and the vehicle. Here are the steps to follow:
- Ensure the car is parked on a flat surface and the engine is cool.
- Disconnect the battery to avoid any electrical issues.
- Remove any engine covers or components that obstruct access to the engine bay.
- Gather all necessary tools and materials for the installation.
Removing the Stock Components
To install the Rotrex supercharger, you will need to remove several stock components from the WRX. Follow these steps:
- Remove the intake manifold by disconnecting the necessary vacuum lines and bolts.
- Take off the stock turbocharger and associated piping.
- Disconnect the fuel lines if you are upgrading the fuel system.
- Remove the stock intercooler to create space for the new setup.
Installing the Rotrex Supercharger
With the stock components removed, you can now install the Rotrex supercharger. Follow these steps carefully:
- Position the supercharger in the designated location, ensuring it fits securely.
- Use the provided mounting brackets to secure the supercharger in place.
- Connect the supercharger to the engine using the supplied piping and silicone hoses.
- Install the oil catch can to manage oil flow effectively.
Connecting the Intercooler and Piping
After securing the supercharger, the next step is to connect the intercooler and piping:
- Install the new intercooler in the front of the vehicle, ensuring proper airflow.
- Connect the intercooler piping from the supercharger to the intercooler.
- Ensure all connections are tight and secure to prevent leaks.
- Double-check the routing of hoses to avoid any interference with moving parts.
Upgrading the Fuel System
To support the increased horsepower, you may need to upgrade the fuel system. Consider the following:
- Install larger fuel injectors compatible with the supercharger setup.
- Upgrade the fuel pump to ensure adequate fuel delivery.
- Recheck all fuel line connections for leaks.
ECU Tuning
After completing the physical installation, tuning the ECU is crucial to optimize performance:
- Use ECU tuning software to adjust fuel maps and boost levels.
- Consult with a professional tuner to achieve the best results.
- Perform a test drive to monitor performance and make further adjustments if necessary.
Final Checks and Testing
Once everything is installed and tuned, conduct a series of final checks:
- Recheck all bolts and connections for tightness.
- Inspect for any fluid leaks around the supercharger and fuel system.
- Reconnect the battery and start the engine, monitoring for any irregular sounds.
- Take the car for a test drive, ensuring smooth acceleration and performance.
Conclusion
Installing a Rotrex supercharger on your Subaru WRX can lead to impressive performance gains, exceeding 200 horsepower. By following this step-by-step guide, you can ensure a successful installation and enjoy the thrill of enhanced power on the road.