Upgrading Your Vb Wrx’s Turbocharger for 350+ Hp: Parts, Tuning, and Setup Tips

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Upgrading the turbocharger on your VB WRX is an exciting way to enhance performance and achieve over 350 horsepower. This article will guide you through the essential parts, tuning considerations, and setup tips to ensure a successful upgrade.

Understanding Turbocharger Upgrades

Turbochargers are crucial for increasing engine power by forcing more air into the combustion chamber. When upgrading, it’s essential to choose the right components to match your performance goals.

Essential Parts for Your Upgrade

  • Turbocharger: Choose a high-flow turbo that can support 350+ hp.
  • Intercooler: Upgrade to a larger intercooler for better cooling efficiency.
  • Fuel Injectors: Install larger injectors to meet increased fuel demands.
  • Fuel Pump: Upgrade to a high-flow fuel pump to ensure adequate fuel supply.
  • Exhaust System: A free-flowing exhaust will help reduce back pressure.
  • ECU Tuning: Essential for optimizing performance and ensuring reliability.

Choosing the Right Turbocharger

Selecting the right turbocharger is critical for achieving your desired horsepower. Popular options for the WRX include:

  • Garrett GTX3071R: Offers excellent spool time and power potential.
  • Blouch Dominator 2.5: Known for its reliability and high power output.
  • FP Green: A great balance of performance and daily drivability.

Upgrading Your Intercooler

An upgraded intercooler is essential for maintaining optimal air temperatures. Consider these options:

  • Process West Verticooler: Excellent cooling efficiency with a compact design.
  • GrimmSpeed Top Mount Intercooler: Provides a significant increase in cooling capacity.
  • ETS Front Mount Intercooler: Ideal for high horsepower builds with superior cooling.

Fuel System Upgrades

To support your new turbo, upgrading the fuel system is necessary. This includes:

  • Fuel Injectors: Consider 850cc or larger injectors for adequate fuel delivery.
  • Fuel Pump: A Walbro 255 or similar high-flow pump is recommended.
  • Fuel Pressure Regulator: Ensure consistent fuel pressure under load.

Tuning Your WRX

After upgrading your turbo and fuel system, proper tuning is essential. Tuning options include:

  • ECU Reflash: Utilize a reputable tuner for a custom map.
  • Accessport: A popular choice for easy tuning and monitoring.
  • Standalone ECU: For advanced users seeking maximum control.

Setup Tips for Optimal Performance

To ensure your WRX performs at its best after the upgrade, consider the following tips:

  • Regular Maintenance: Keep up with oil changes and filter replacements.
  • Monitor Boost Levels: Use a boost gauge to ensure safe operation.
  • Check for Leaks: Inspect all connections and hoses for leaks.
  • Cooling System: Ensure your cooling system is functioning optimally.

Conclusion

Upgrading your VB WRX’s turbocharger to achieve 350+ hp is a rewarding project that requires careful selection of parts, tuning, and setup. With the right components and attention to detail, you can enjoy a significant boost in performance and driving excitement.