Choosing the Best Size Turbo for Your Gr86: 0.8, 1.0, or 1.2 Bar Boost Levels

The Toyota GR86 has gained popularity among car enthusiasts for its lightweight design and excellent handling. One of the best ways to enhance its performance is by upgrading to a turbocharger. However, choosing the right size turbo is crucial for achieving the desired balance of power and drivability. In this article, we will explore the differences between 0.8, 1.0, and 1.2 bar boost levels to help you make an informed decision.

Understanding Turbo Boost Levels

Turbo boost levels refer to the amount of pressure the turbocharger generates to force more air into the engine. This increased air allows for more fuel to be burned, resulting in higher power output. The choice of boost level can significantly impact the performance characteristics of your GR86.

  • 0.8 Bar Boost: This level is suitable for those looking for a mild increase in power while maintaining reliability.
  • 1.0 Bar Boost: A balanced option that offers a noticeable power increase without overwhelming the engine.
  • 1.2 Bar Boost: This level provides maximum performance, but may require additional modifications for optimal reliability.

0.8 Bar Boost: Pros and Cons

The 0.8 bar boost level is often considered the entry point for turbocharging the GR86. It offers a modest increase in horsepower and torque while keeping engine stress relatively low.

  • Pros:
    • Improved fuel efficiency.
    • Lower engine stress and wear.
    • Suitable for daily driving.
  • Cons:
    • Limited power increase compared to higher boost levels.
    • May not satisfy those seeking maximum performance.

1.0 Bar Boost: The Balanced Choice

The 1.0 bar boost level strikes a balance between performance and reliability. It provides a significant power increase while still being manageable for the GR86’s engine.

  • Pros:
    • Noticeable increase in horsepower and torque.
    • Good balance of performance and reliability.
    • Suitable for both street and track use.
  • Cons:
    • May require additional tuning for optimal performance.
    • Potential for increased wear on engine components.

1.2 Bar Boost: Maximum Performance

The 1.2 bar boost level is for those who seek the ultimate performance from their GR86. This level can unleash significant power but comes with increased risks and potential modifications.

  • Pros:
    • Maximum horsepower and torque output.
    • Exciting driving experience and track-ready performance.
    • Ideal for competitive racing applications.
  • Cons:
    • Higher risk of engine damage without proper tuning.
    • May require upgraded fuel system and intercooler.
    • Less suitable for daily driving due to increased stress on components.

Factors to Consider When Choosing a Turbo Size

When selecting the appropriate turbo size for your GR86, several factors should be considered to ensure optimal performance and reliability.

  • Driving Style: Consider whether you prioritize daily driving comfort or track performance.
  • Engine Modifications: Additional upgrades may be necessary for higher boost levels.
  • Fuel Quality: Higher boost levels often require higher octane fuel for optimal performance.
  • Budget: Factor in the cost of the turbo, installation, and any necessary supporting modifications.

Conclusion

Choosing the best size turbo for your GR86 depends on your performance goals, driving style, and willingness to invest in supporting modifications. The 0.8 bar boost is ideal for reliability, 1.0 bar offers a balanced approach, and 1.2 bar is for those seeking maximum performance. Weigh the pros and cons of each option carefully to make the best decision for your driving experience.