Upgrading the Subaru Wrx Turbocharger: Achieving 350+ Hp Safely

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The Subaru WRX is known for its performance and rally heritage, making it a popular choice among car enthusiasts. One of the most effective ways to enhance the power of a WRX is by upgrading its turbocharger. This article will guide you through the process of upgrading the Subaru WRX turbocharger to achieve 350+ horsepower safely.

Understanding Turbochargers

A turbocharger is a device that uses exhaust gases to spin a turbine, which then compresses air entering the engine. This process allows for more air and fuel to be burned, resulting in increased power output. However, upgrading a turbocharger requires careful consideration to maintain engine reliability.

Choosing the Right Turbocharger

When selecting a turbocharger for your Subaru WRX, it’s essential to consider several factors:

  • Turbo Size: Larger turbos can provide more power but may introduce lag.
  • Type of Turbo: Consider whether to go with a journal bearing or ball bearing turbo.
  • Brand Reputation: Opt for reputable brands known for quality and performance.
  • Garrett GTX3071R
  • Blouch 20GXT
  • FP Black

Supporting Modifications

Upgrading the turbocharger alone may not be sufficient to achieve 350+ horsepower safely. Supporting modifications are crucial for ensuring engine health and maximizing performance.

  • Fuel System Upgrade: Consider upgrading fuel injectors and fuel pumps to handle increased fuel demands.
  • Intercooler Upgrade: A larger intercooler can help reduce intake temperatures, improving performance.
  • Exhaust System: A high-flow exhaust system can help reduce back pressure and improve turbo response.

Engine Management Tuning

Proper engine management tuning is essential after upgrading the turbocharger and supporting mods. A professional tune will optimize air-fuel ratios, ignition timing, and boost levels to ensure safe and reliable performance.

Installation Process

Installing a new turbocharger requires mechanical knowledge and the right tools. Here’s a general overview of the installation process:

  • Preparation: Gather all necessary tools and parts.
  • Remove Old Turbo: Disconnect the exhaust and intake, then remove the old turbocharger.
  • Install New Turbo: Follow manufacturer instructions to install the new turbocharger.
  • Reconnect Components: Reattach the exhaust, intake, and any other disconnected components.
  • Check for Leaks: Start the engine and check for any oil or boost leaks.

Testing and Tuning

After installation, it’s crucial to test the vehicle to ensure everything is functioning correctly. Monitor boost levels, air-fuel ratios, and engine temperatures during the initial test drives.

Dyno Tuning

A dyno tune is highly recommended to fine-tune the engine management system. This process will help you achieve the desired horsepower while ensuring the engine operates within safe parameters.

Safety Considerations

While upgrading to a higher horsepower level is exciting, it’s essential to prioritize safety. Here are some considerations:

  • Regular Maintenance: Keep up with regular oil changes and maintenance to ensure engine health.
  • Monitor Engine Performance: Pay attention to any unusual sounds, smells, or performance issues.
  • Use Quality Parts: Invest in high-quality parts to reduce the risk of failure.

Conclusion

Upgrading the turbocharger on your Subaru WRX can lead to impressive performance gains. By choosing the right turbo, making supporting modifications, and ensuring proper tuning, you can achieve 350+ horsepower safely. Remember to prioritize safety and regular maintenance to enjoy your enhanced WRX for years to come.