Best Legacy Turbo Sizes for Daily Driving and 300+ Hp Gains

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The Subaru Legacy has long been a popular choice among car enthusiasts for its blend of practicality and performance. When it comes to enhancing the performance of your Legacy, upgrading the turbocharger is one of the most effective modifications you can make. In this article, we will explore the best turbo sizes for daily driving while still allowing for significant horsepower gains, specifically targeting the 300+ hp range.

Understanding Turbocharger Sizing

Turbocharger sizing is critical for achieving the desired balance between performance and drivability. The size of the turbo affects spool time, boost pressure, and overall engine performance. A well-sized turbo will provide enough power for spirited driving without sacrificing daily usability.

Factors to Consider When Choosing a Turbo

  • Engine Type: The engine configuration and displacement play a significant role in selecting the right turbo.
  • Power Goals: Define your horsepower goals to narrow down the turbo options.
  • Driving Style: Consider how you plan to use the vehicle—daily driving versus track use.
  • Boost Threshold: Understand the RPM range where you want the turbo to start producing boost.

For those looking to achieve over 300 hp in a Subaru Legacy while maintaining daily drivability, the following turbo sizes are highly recommended:

  • TD05-16G: This turbo is a popular choice among Subaru enthusiasts. It provides a good balance of spool time and power, making it suitable for daily driving.
  • GT2860R: Known for its quick spool and high efficiency, the GT2860R can easily achieve 300 hp with the right supporting modifications.
  • FP Blue: The Forced Performance Blue turbo is a great option for those looking for substantial power gains while still being responsive in daily driving scenarios.
  • Garrett GTX2867R: This turbo offers excellent performance and efficiency, making it a fantastic choice for both street and track applications.

Supporting Modifications for Turbo Upgrades

To maximize the potential of your new turbo, certain supporting modifications are necessary. These enhancements will ensure that your engine can handle the increased power and maintain reliability.

  • Upgraded Intercooler: A larger intercooler will help keep intake temperatures down, improving performance and efficiency.
  • High-Flow Fuel Injectors: Upgrading to larger fuel injectors ensures that your engine receives enough fuel to match the increased air flow from the turbo.
  • ECU Tuning: A proper tune is essential to optimize fuel maps and boost levels for your new turbo.
  • Exhaust System: A less restrictive exhaust will help improve turbo spool and overall engine efficiency.

Daily Driving Considerations

While upgrading to a larger turbo can yield impressive power gains, it’s essential to consider how these changes will impact daily driving. Here are some considerations:

  • Spool Time: Larger turbos may take longer to spool, which can affect acceleration in low RPMs.
  • Throttle Response: Ensure that the turbo you choose maintains good throttle response for everyday driving.
  • Fuel Economy: Be aware that increasing power can sometimes lead to decreased fuel efficiency.
  • Reliability: Choose a turbo that is known for reliability to avoid frequent maintenance issues.

Conclusion

Upgrading the turbocharger on your Subaru Legacy can significantly enhance its performance, allowing for 300+ hp gains while still being suitable for daily driving. By carefully selecting the right turbo size and making the necessary supporting modifications, you can enjoy a thrilling driving experience without sacrificing practicality. Always remember to consider your driving style and goals when making modifications to ensure that your vehicle remains a joy to drive every day.