How to Select the Right Size Turbo for Your Subaru Wrx: Garrett Vsborgwarner

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Selecting the right size turbo for your Subaru WRX can significantly impact its performance and driving experience. Two of the most popular turbocharger brands for the WRX are Garrett and BorgWarner. This article will guide you through the factors to consider when choosing between these two brands and how to determine the appropriate size turbo for your needs.

Understanding Turbocharger Sizing

Turbochargers are measured in terms of their compressor and turbine sizes. Choosing the right size turbo is crucial for achieving the desired balance between power and drivability. Here are some key concepts to understand:

  • Compressor Size: A larger compressor can move more air, which can lead to higher horsepower but may also introduce lag.
  • Turbine Size: The size of the turbine affects how quickly the turbo spools up and how much exhaust energy is required.
  • Boost Pressure: The amount of boost produced by the turbo is directly related to the size of the compressor and turbine.

Factors to Consider When Choosing a Turbo

When selecting a turbo for your Subaru WRX, consider the following factors:

  • Power Goals: Determine how much horsepower you want to achieve. This will guide your choice of turbo size.
  • Driving Style: Consider whether you prefer a daily driver or a track-focused setup, as this will influence the turbo characteristics you need.
  • Engine Modifications: If your WRX has significant modifications, you may require a larger turbo to match the increased airflow demands.
  • Fuel Type: The type of fuel you plan to use (pump gas vs. race fuel) can affect the size of the turbo you should choose.

Garrett Turbochargers

Garrett is known for producing high-performance turbochargers that are widely used in motorsports. Here are some advantages and considerations when choosing a Garrett turbo for your WRX:

  • Performance: Garrett turbos are designed for high efficiency and can deliver significant power gains.
  • Variety: They offer a wide range of turbo sizes and configurations, making it easier to find a suitable option for your application.
  • Spool Time: Some Garrett models are designed to reduce turbo lag, providing a more responsive driving experience.
  • Garrett GTX2867R: A popular choice for those looking for a balance of power and responsiveness.
  • Garrett GTX3071R: Ideal for higher horsepower builds, suitable for both street and track use.

BorgWarner Turbochargers

BorgWarner is another reputable brand known for its innovative turbo technology. Here are some benefits and considerations for choosing a BorgWarner turbo:

  • Efficiency: BorgWarner turbos are designed with efficiency in mind, often resulting in better fuel economy.
  • Durability: They are built to withstand high temperatures and pressures, making them a reliable choice for performance applications.
  • Responsive: Many BorgWarner turbos feature advanced designs that enhance spool time and throttle response.
  • BorgWarner EFR 7163: Known for its quick spool and high power potential, making it suitable for both street and race applications.
  • BorgWarner K04: A direct replacement turbo that offers a good balance of performance and drivability.

Comparing Garrett and BorgWarner

When deciding between Garrett and BorgWarner, consider the following comparisons:

  • Power Output: Garrett turbos may provide higher peak power, while BorgWarner turbos often excel in efficiency.
  • Spool Characteristics: Garrett turbos may have a slight edge in reducing lag, but BorgWarner models are known for their responsiveness.
  • Installation: Both brands offer turbos that can fit the WRX, but installation requirements may vary based on the specific model.

Conclusion

Choosing the right size turbo for your Subaru WRX involves careful consideration of your power goals, driving style, and brand preferences. Both Garrett and BorgWarner offer excellent options, each with unique advantages. By understanding the differences and matching a turbo to your specific needs, you can enhance your WRX’s performance and driving experience.