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The Mitsubishi Lancer Evolution IX, commonly referred to as the Evo 9, is a beloved model among car enthusiasts and tuners. Known for its performance and rally heritage, many owners seek ways to enhance its power and efficiency. One of the most effective upgrades for boosting horsepower is the installation of a downpipe and cat-back exhaust system. This article will guide you through the process of installing these components to achieve an impressive gain of up to 20 horsepower.
Understanding the Benefits of Upgrading Your Evo 9 Exhaust System
Before diving into the installation process, it’s essential to understand why upgrading the downpipe and cat-back exhaust can significantly enhance your vehicle’s performance.
- Improved Exhaust Flow: A high-performance downpipe reduces restrictions, allowing exhaust gases to exit the engine more efficiently.
- Increased Horsepower: By optimizing exhaust flow, you can gain up to 20 additional horsepower, enhancing overall performance.
- Weight Reduction: Aftermarket exhaust systems are often lighter than stock parts, contributing to better power-to-weight ratios.
- Enhanced Sound: A cat-back exhaust system can provide a more aggressive and sporty sound, appealing to enthusiasts.
Tools and Materials Needed
Before starting the installation, gather the necessary tools and materials to ensure a smooth process.
- Socket set
- Wrench set
- Jack and jack stands
- Torque wrench
- Cutting tool (if necessary)
- New downpipe
- Cat-back exhaust system
- Gasket and hardware kit
Step-by-Step Installation Process
1. Preparing the Vehicle
Start by parking your Evo 9 on a flat surface. Engage the parking brake and lift the vehicle using a jack. Secure it with jack stands to ensure safety during the installation process.
2. Removing the Stock Exhaust System
Begin by removing the stock cat-back exhaust system. Use your socket set to unbolt the exhaust from the catalytic converter and the hangers. If the bolts are rusted, you may need to use penetrating oil to loosen them.
Once unbolted, carefully remove the exhaust system from the vehicle. Take note of any gaskets that may need replacement during the new installation.
3. Installing the New Downpipe
Next, remove the stock downpipe. This may involve unbolting it from the turbocharger and the catalytic converter. Again, use penetrating oil if necessary.
Once the stock downpipe is removed, install the new downpipe. Align it with the turbo and catalytic converter, and secure it using the new bolts and gasket provided in your hardware kit. Make sure to torque the bolts to the manufacturer’s specifications.
4. Installing the Cat-Back Exhaust System
With the downpipe in place, it’s time to install the cat-back exhaust system. Begin by positioning the new exhaust in place, aligning it with the downpipe and the hangers.
Secure the exhaust system using the provided bolts and gaskets. Ensure all connections are tight and properly aligned. Once installed, double-check all bolts to ensure they are torqued to the correct specifications.
5. Final Checks and Testing
After the installation is complete, lower the vehicle and start the engine. Listen for any unusual sounds that may indicate a leak or improper installation. Check for leaks at all joints and connections.
Take your Evo 9 for a test drive to experience the improved performance and sound. Monitor the vehicle for any warning lights or issues that may arise.
Conclusion
Upgrading the downpipe and cat-back exhaust system on your Evo 9 is a rewarding project that can yield significant performance gains. With the right tools and a bit of patience, you can enhance your vehicle’s horsepower and enjoy a more aggressive sound. Whether you’re a seasoned mechanic or a DIY enthusiast, this installation process is manageable and well worth the effort.
Remember to follow all safety precautions and consult your vehicle’s manual for specific torque specifications. Enjoy your upgraded Evo 9 and the thrill of improved performance!