Table of Contents
The quest for high horsepower in the BMW M4 has led many enthusiasts to explore turbo upgrades. Two popular options are the Garrett GTX 3071R and the BorgWarner EFR 9174. This article compares these two turbochargers to determine which one is best suited for achieving 600+ horsepower.
Overview of Turbochargers
Turbochargers play a crucial role in enhancing engine performance by forcing more air into the combustion chamber. The right turbocharger can significantly increase horsepower and torque, making it essential to choose wisely.
Garrett GTX 3071R
The Garrett GTX 3071R is known for its reliability and performance. It features advanced aerodynamics and a compact design, making it a popular choice among tuners.
Specifications
- Compressor Wheel Diameter: 71mm
- Turbine Wheel Diameter: 60mm
- Max Horsepower: 600 hp
- Boost Range: 1.5 to 2.0 bar
Performance Characteristics
The GTX 3071R is designed to provide quick spool-up and strong mid-range power, making it suitable for street and track applications. Its efficiency allows for a broad power band, enhancing overall drivability.
BorgWarner EFR 9174
The BorgWarner EFR 9174 is another contender in the turbo upgrade market. It is known for its innovative features and high-performance capabilities.
Specifications
- Compressor Wheel Diameter: 74mm
- Turbine Wheel Diameter: 64mm
- Max Horsepower: 650 hp
- Boost Range: 1.5 to 2.2 bar
Performance Characteristics
The EFR 9174 is designed for high efficiency and performance. It features a twin-scroll design, which helps reduce turbo lag and improve throttle response. This turbo is particularly well-suited for applications requiring high horsepower and torque.
Comparative Analysis
When comparing the Garrett GTX 3071R and the BorgWarner EFR 9174, several factors come into play, including size, performance, and suitability for the M4.
Size and Dimensions
The size of the turbocharger can impact installation and performance. The GTX 3071R is slightly smaller, making it easier to fit in tighter engine bays. In contrast, the EFR 9174, with its larger dimensions, may require more space but offers greater potential for horsepower.
Power Delivery
The power delivery characteristics of each turbo differ. The GTX 3071R provides quick spool-up, making it ideal for street-driven applications. The EFR 9174, while slightly slower to spool, offers a broader power band and higher peak horsepower.
Installation Considerations
Installation can vary between these two turbos. The GTX 3071R is often easier to install due to its compact design. The EFR 9174 may require additional modifications to fit properly, depending on the specific M4 setup.
Conclusion
Both the Garrett GTX 3071R and the BorgWarner EFR 9174 are excellent choices for M4 turbo upgrades. The decision ultimately comes down to individual preferences and specific performance goals. For those seeking quick spool and street-friendly performance, the GTX 3071R is a solid option. However, for maximum horsepower and a high-performance setup, the EFR 9174 may be the better choice.
Final Thoughts
Choosing the right turbocharger is essential for achieving the desired performance in the BMW M4. Evaluating the characteristics of both the Garrett GTX 3071R and the BorgWarner EFR 9174 will help enthusiasts make an informed decision that aligns with their horsepower goals.