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The 2004 BMW Z4 M is a car that has captured the hearts of enthusiasts since its release. Known for its sleek design and impressive performance, this roadster has become a favorite among car lovers. Recently, a modified version of the Z4 M, equipped with a supercharged S54 engine, was put to the test on a dynamometer, yielding remarkable results.
The S54 Engine: A Brief Overview
The S54 engine is a naturally aspirated inline-six engine that was originally used in the BMW M3 E46. With a displacement of 3.2 liters, it is known for its high-revving capabilities and impressive power output. The engine is characterized by:
- High compression ratio
- Individual throttle bodies
- Variable valve timing
These features contribute to the S54’s reputation as one of the best naturally aspirated engines produced by BMW. However, enthusiasts have sought ways to enhance its performance, leading to the popular modification of adding a supercharger.
The Supercharger Upgrade
Adding a supercharger to the S54 engine significantly boosts its power output. The supercharger forces more air into the engine, allowing for a greater amount of fuel to be burned, which results in increased horsepower and torque. In this case, the Z4 M was fitted with a high-quality supercharger kit designed specifically for the S54.
The key benefits of the supercharger upgrade include:
- Increased horsepower
- Improved throttle response
- Enhanced driving experience
This modification transforms the Z4 M from a capable sports car into a high-performance machine that can compete with some of the best in its class.
Dyno Results: 400 HP Achieved
When the modified Z4 M was taken to the dyno, the results were astonishing. The car achieved an impressive 400 horsepower at the wheels, showcasing the effectiveness of the supercharger upgrade. This figure is a significant increase compared to the stock output of around 330 horsepower.
Such power allows the Z4 M to deliver exhilarating performance on both the road and the track. The increase in horsepower is complemented by a noticeable boost in torque, providing the driver with a thrilling experience.
Performance Metrics
The dyno results reveal not just the peak horsepower but also important performance metrics that enthusiasts should consider. Key performance metrics include:
- Peak torque: 350 lb-ft
- Power band: 3,000 to 7,500 RPM
- 0-60 mph time: approximately 4.2 seconds
These figures highlight the enhanced capabilities of the Z4 M after the supercharger installation, making it a formidable contender in the sports car arena.
Driving Experience
With the supercharged S54 engine, the driving experience of the Z4 M is nothing short of exhilarating. The car feels more responsive, and the power delivery is smooth and linear. Drivers can expect:
- Instant throttle response
- Improved acceleration
- A more engaging driving experience
The enhanced performance allows for confident overtaking and spirited driving on twisty roads, making every journey an adventure.
Conclusion
The 2004 BMW Z4 M, when modified with a supercharged S54 engine, proves to be a powerhouse on the dyno, achieving an impressive 400 horsepower. This upgrade not only boosts performance but also enhances the overall driving experience. For enthusiasts looking to elevate their Z4 M, the supercharger is a compelling option that delivers real-world results.
With its blend of style, performance, and engineering excellence, the Z4 M remains a standout choice for those who seek excitement behind the wheel.