Installing a Custom 3-inch Cat-back Exhaust on Your Subaru Wrx: Complete Process

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Installing a custom 3-inch cat-back exhaust on your Subaru WRX can significantly enhance its performance and sound. This guide will provide you with a complete step-by-step process to ensure a successful installation.

Tools and Materials Needed

  • 3-inch cat-back exhaust system
  • Socket wrench set
  • Torque wrench
  • Jack and jack stands
  • Safety goggles
  • Gloves
  • Penetrating oil
  • Rubber mallet

Preparation Steps

Before starting the installation, ensure that your vehicle is parked on a flat surface and the engine is cool. Gather all the tools and materials you’ll need for the job.

Safety First

Always wear safety goggles and gloves to protect yourself from debris and sharp edges during the installation process. Make sure to work in a well-ventilated area.

Removing the Stock Exhaust

To begin, you will need to remove the stock exhaust system. Follow these steps:

  • Use a jack to lift the rear of the vehicle and secure it with jack stands.
  • Apply penetrating oil to the exhaust hangers and bolts to loosen them.
  • Remove the bolts securing the stock exhaust to the catalytic converter.
  • Detach the exhaust hangers from the rubber mounts.
  • Carefully remove the stock exhaust from the vehicle.

Installing the Custom Cat-Back Exhaust

With the stock exhaust removed, you can now install the custom 3-inch cat-back exhaust. Follow these steps:

  • Position the new exhaust system under the vehicle.
  • Attach the mid-pipe to the catalytic converter using the provided bolts.
  • Align the exhaust hangers with the rubber mounts, ensuring a secure fit.
  • Use a rubber mallet to gently tap the exhaust into place if necessary.
  • Tighten all bolts using a torque wrench to the manufacturer’s specifications.

Final Checks

Once the installation is complete, it’s important to perform some final checks:

  • Inspect all connections to ensure they are secure.
  • Check for any exhaust leaks by starting the engine and listening for hissing sounds.
  • Verify that the exhaust system is properly aligned and does not touch any other components.

Enjoying Your New Exhaust

After confirming that everything is in order, you can now enjoy the enhanced sound and performance of your Subaru WRX with the new 3-inch cat-back exhaust. Take it for a test drive and experience the difference!

Conclusion

Installing a custom 3-inch cat-back exhaust can be a rewarding project that improves your vehicle’s performance. By following this guide, you can successfully complete the installation and enjoy the benefits of your new exhaust system.