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When it comes to upgrading the turbocharger on your Subaru WRX, two popular options that enthusiasts often consider are the Garrett G42-1200 and the BorgWarner EFR 8374. Both of these turbochargers have unique characteristics and advantages that can significantly impact your vehicle’s performance. This article will delve into the specifics of each turbo, helping you make an informed decision on which one is the best fit for your WRX.
Overview of the Garrett G42-1200
The Garrett G42-1200 is designed for high-performance applications, offering a blend of efficiency and power. It is well-suited for those looking to achieve significant horsepower gains while maintaining reliability.
- Compressor Size: 62mm
- Turbo Type: Dual Ball Bearing
- Power Range: Up to 1200 horsepower
- Efficiency: High efficiency at high boost levels
Overview of the BorgWarner EFR 8374
The BorgWarner EFR 8374 turbocharger is known for its advanced technology and excellent spool characteristics. It is particularly favored for its quick response and efficiency, making it a great choice for both street and track applications.
- Compressor Size: 74mm
- Turbo Type: Dual Ball Bearing with Integrated Wastegate
- Power Range: Up to 800 horsepower
- Efficiency: Excellent efficiency across a wide range of RPMs
Performance Comparison
When comparing the performance of the Garrett G42-1200 and the BorgWarner EFR 8374, several factors come into play, including spool time, peak power, and overall efficiency.
Spool Time
The spool time refers to how quickly a turbocharger can reach its optimal boost pressure. The EFR 8374 is known for its quick spool time, making it ideal for applications where immediate throttle response is crucial. In contrast, the G42-1200, while still responsive, may take slightly longer to spool due to its larger size.
Peak Power
If your goal is to achieve maximum horsepower, the Garrett G42-1200 has the upper hand, offering a power range of up to 1200 horsepower. This makes it suitable for high-powered builds and racing applications. The EFR 8374, while powerful, is limited to around 800 horsepower, making it more suitable for street builds or moderate performance applications.
Overall Efficiency
Efficiency is crucial for both street and race applications. The EFR 8374 excels in this area, providing excellent efficiency across a wide RPM range, which can lead to better fuel economy and performance. The G42-1200, while efficient at high boost levels, may not offer the same level of efficiency at lower RPMs.
Installation Considerations
Both turbochargers will require some modifications to install on your WRX. However, the complexity of the installation can vary.
- Garrett G42-1200: May require custom piping and tuning to optimize performance.
- BorgWarner EFR 8374: Generally easier to install with more off-the-shelf parts available.
Cost Analysis
Pricing can be a deciding factor when choosing between these two turbochargers. The Garrett G42-1200 typically comes at a higher price point due to its advanced technology and higher horsepower capabilities. The BorgWarner EFR 8374 is often more budget-friendly, making it an attractive option for those looking to enhance their vehicle without breaking the bank.
Conclusion
Choosing between the Garrett G42-1200 and the BorgWarner EFR 8374 ultimately depends on your specific performance goals and driving style. If you are aiming for maximum horsepower and are willing to invest in a more complex installation, the G42-1200 may be the better choice. However, if you prioritize quick spool time and overall efficiency for a balanced performance, the EFR 8374 could be the ideal fit for your WRX.