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The S55 engine, found in models like the BMW M3 and M4, has gained a reputation for its tuning potential. One of the most effective ways to increase power output is by upgrading the turbochargers. In this article, we will compare various aftermarket turbochargers available for the S55, focusing on their performance, pricing, and overall value.
Understanding the S55 Turbocharger System
The S55 engine utilizes twin-scroll turbochargers, which provide improved efficiency and quicker spool times compared to traditional turbo systems. Upgrading these turbochargers can significantly impact performance, but it’s essential to understand the differences between the options available.
Key Factors to Consider When Choosing Turbochargers
When evaluating aftermarket turbochargers for the S55, several factors should be considered:
- Power Output: The maximum horsepower and torque the turbocharger can provide.
- Response Time: How quickly the turbo spools up and delivers power.
- Durability: The longevity and reliability of the turbocharger under stress.
- Installation Complexity: The difficulty of installation and any additional modifications required.
- Price: The cost of the turbocharger and any associated installation expenses.
Popular Aftermarket Turbochargers for the S55
1. Pure Turbos Stage 1 Turbocharger
The Pure Turbos Stage 1 Turbocharger is a popular choice among S55 enthusiasts. It offers a significant increase in power while maintaining a factory-like spool time.
- Power Output: Up to 600 horsepower.
- Response Time: Excellent low-end torque.
- Durability: Built with high-quality materials for longevity.
- Price: Approximately $1,500.
2. VRSF Turbocharger Upgrade Kit
The VRSF Turbocharger Upgrade Kit is designed for those looking for a balance between power and cost. This kit includes everything needed for installation.
- Power Output: Up to 650 horsepower.
- Response Time: Slightly slower spool compared to Pure Turbos.
- Durability: Good build quality with warranty options.
- Price: Around $1,800.
3. BMP Turbocharger Upgrade
The BMP Turbocharger Upgrade is known for its high power potential and is favored by those looking to push their S55 to the limits.
- Power Output: Up to 700 horsepower.
- Response Time: Moderate spool time.
- Durability: Designed for extreme performance applications.
- Price: Approximately $2,200.
4. HKS GT II Turbocharger
The HKS GT II Turbocharger is a premium option that offers exceptional performance and reliability, making it a favorite among serious tuners.
- Power Output: Up to 750 horsepower.
- Response Time: Quick spool with excellent throttle response.
- Durability: High-quality construction for long-term use.
- Price: Around $2,800.
Comparative Analysis of Aftermarket Turbochargers
To help you make an informed decision, here’s a comparative analysis of the turbochargers discussed:
- Power vs. Price: Pure Turbos offers the best power-to-price ratio for moderate builds.
- Best Overall Performance: HKS GT II provides top-tier performance but at a higher price point.
- Best for Budget Builds: VRSF offers good performance without breaking the bank.
- High-Performance Enthusiasts: BMP is ideal for those looking to maximize horsepower.
Conclusion
Choosing the right aftermarket turbocharger for your S55 engine depends on your performance goals, budget, and how you plan to use your vehicle. Each of the turbochargers discussed has its advantages, making it essential to weigh your options carefully. Whether you’re looking for a balance of power and price or aiming for maximum performance, there’s an aftermarket turbocharger that fits your needs.