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The quest for power and performance is a never-ending journey for Audi S4 enthusiasts. Among the many upgrades available, turbochargers stand out as a key component that can significantly enhance engine performance. In this article, we will compare two popular turbo options: the Garrett G35-900 and the Garrett G35-1050. We will explore their specifications, performance characteristics, and how they can impact your Audi S4’s power delivery.
Understanding Turbochargers
Turbochargers are devices that increase the efficiency and power output of an internal combustion engine by forcing more air into the combustion chamber. This process allows for more fuel to be burned, resulting in greater power. When selecting a turbocharger for your Audi S4, it is essential to consider several factors, including the turbo’s size, boost pressure, and efficiency.
Garrett G35-900 Overview
The Garrett G35-900 is a popular choice among Audi S4 owners looking for a balance between power and drivability. This turbocharger features advanced aerodynamics and a compact design, making it suitable for various performance applications.
Specifications
- Compressor Inducer Diameter: 62 mm
- Compressor Exducer Diameter: 82 mm
- Turbine Inducer Diameter: 70 mm
- Max Boost Pressure: 30 psi
- Power Range: 500-700 HP
Performance Characteristics
The G35-900 offers a strong power band, with a responsive spool-up time that allows drivers to feel the boost quickly. This turbocharger is known for its ability to maintain consistent power delivery across a wide RPM range, making it an excellent choice for both street and track use.
Garrett G35-1050 Overview
On the other hand, the Garrett G35-1050 is designed for those who seek maximum performance from their Audi S4. This turbocharger is larger than the G35-900 and is built to support higher power levels, making it ideal for dedicated performance builds.
Specifications
- Compressor Inducer Diameter: 67 mm
- Compressor Exducer Diameter: 88 mm
- Turbine Inducer Diameter: 76 mm
- Max Boost Pressure: 35 psi
- Power Range: 600-800 HP
Performance Characteristics
The G35-1050 is known for its ability to produce massive power, especially at higher RPMs. However, this turbocharger may exhibit a slightly delayed spool compared to the G35-900, which could affect drivability in daily driving situations. It is best suited for performance-focused applications where maximum horsepower is the goal.
Comparison of Performance
When comparing the Garrett G35-900 and G35-1050, several factors come into play. Understanding how each turbocharger performs can help you make an informed decision based on your specific needs and driving style.
Power Delivery
The G35-900 provides a more linear power delivery, making it easier to handle in various driving conditions. In contrast, the G35-1050 offers a peak power advantage, but may require more careful throttle management to avoid lag.
Spool Time
The spool time of the G35-900 is generally quicker, allowing for a more responsive driving experience. The G35-1050, while capable of producing more power, may take longer to reach optimal boost levels, which can be a consideration for daily driving.
Boost Threshold
Both turbochargers have their strengths in terms of boost threshold. The G35-900 tends to produce usable power at lower RPMs, while the G35-1050 shines in higher RPM scenarios, making it more suited for track use.
Installation Considerations
Installing a new turbocharger in your Audi S4 requires careful planning and consideration. Both the G35-900 and G35-1050 have specific installation requirements that must be met for optimal performance.
Supporting Modifications
- Upgraded intercooler
- High-flow fuel injectors
- Performance exhaust system
- ECU tuning
Professional Installation
Due to the complexity of turbo installation, it is recommended to seek professional assistance. This ensures that all components are correctly installed and that the vehicle is tuned for the new turbo’s specifications.
Conclusion
Choosing between the Garrett G35-900 and G35-1050 ultimately depends on your performance goals and driving style. The G35-900 is an excellent choice for those seeking a balance of power and drivability, while the G35-1050 is perfect for those looking to push their Audi S4 to the limits. Regardless of your choice, both turbochargers can deliver impressive performance upgrades that will enhance your driving experience.