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The B9 S4 has become a popular choice among car enthusiasts for its balance of luxury and performance. In this article, we will compare the stock power of the B9 S4 with the APR Stage 3 upgrade, which claims an impressive 420 horsepower and 470 lb-ft of torque.
Understanding the B9 S4
The Audi B9 S4 is part of the Audi A4 family and features a 3.0-liter V6 engine. This engine is equipped with a supercharger, which helps deliver a smooth power band and excellent torque. The stock version of the B9 S4 is capable of producing around 349 horsepower and 369 lb-ft of torque, making it a formidable contender in its class.
Stock Power Output
In its stock form, the B9 S4 provides a well-rounded driving experience. The power delivery is linear, and the car accelerates smoothly. Here are some key specifications of the stock B9 S4:
- Horsepower: 349 hp
- Torque: 369 lb-ft
- 0-60 mph: Approximately 4.4 seconds
- Top Speed: Electronically limited to 155 mph
APR Stage 3 Upgrade
The APR Stage 3 upgrade transforms the B9 S4 into a high-performance vehicle. This upgrade includes a larger supercharger, upgraded intercoolers, and a performance exhaust system. The result is a significant increase in power and torque, enhancing the overall driving experience.
Power Specifications
With the APR Stage 3 upgrade, the B9 S4 reaches new heights in performance:
- Horsepower: 420 hp
- Torque: 470 lb-ft
- 0-60 mph: Approximately 3.7 seconds
- Top Speed: Electronically limited to 155 mph (with potential for higher speeds)
Performance Comparison
Comparing the stock B9 S4 with the APR Stage 3 version showcases the dramatic differences in performance. The increase in horsepower and torque results in a more exhilarating driving experience.
- Acceleration: The APR Stage 3 upgrade reduces the 0-60 time by nearly a second.
- Power Delivery: The upgraded supercharger provides a more aggressive power curve.
- Driving Experience: Enhanced throttle response and improved overall dynamics.
Considerations for Upgrading
While the APR Stage 3 upgrade offers substantial performance benefits, there are several factors to consider:
- Warranty: Upgrading may void the manufacturer’s warranty.
- Reliability: Higher performance can lead to increased wear on engine components.
- Cost: The upgrade involves a significant investment, both in parts and labor.
Conclusion
The B9 S4 is an impressive vehicle in its stock form, but the APR Stage 3 upgrade takes it to another level. With increased horsepower and torque, the driving experience becomes more thrilling. Ultimately, the decision to upgrade should be based on individual preferences and driving goals.