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The Audi B9 S4 is a performance sedan that offers a blend of luxury and power. For enthusiasts looking to enhance their driving experience without breaking the bank, there are several modifications available that can significantly increase horsepower and torque. In this article, we will review the best power gains for the B9 S4 under $2,000, focusing on the top mods that deliver impressive results.
Understanding the B9 S4 Engine
The B9 S4 is equipped with a 3.0-liter V6 engine that features a supercharger, producing around 349 horsepower and 369 lb-ft of torque. This engine is known for its responsiveness and smooth power delivery. However, many drivers seek to unlock even more potential through aftermarket modifications.
Top Mods for Power Gains
- ECU Tune
- Cold Air Intake
- Upgraded Intercooler
- High-Performance Exhaust System
- Upgraded Charge Pipes
1. ECU Tune
An ECU tune is one of the most effective ways to increase power in the B9 S4. By optimizing the engine’s fuel mapping, timing, and boost pressure, a tune can unlock an additional 50-100 horsepower, depending on the specific setup.
2. Cold Air Intake
A cold air intake system allows for improved airflow to the engine, which can enhance performance. This mod typically provides a noticeable increase in horsepower and can improve throttle response. Many options are available for under $300.
3. Upgraded Intercooler
Upgrading the intercooler helps to reduce intake temperatures, which can lead to more efficient combustion and increased power. A performance intercooler can be found for around $600 and can significantly improve the performance of a tuned engine.
4. High-Performance Exhaust System
A high-performance exhaust system not only improves the sound of the B9 S4 but also enhances power by reducing back pressure. Many aftermarket exhaust systems are available for under $1,000 and can provide gains of 10-20 horsepower.
5. Upgraded Charge Pipes
Upgrading the charge pipes can improve airflow and reduce pressure drop, especially when running higher boost levels. This modification is relatively inexpensive, usually costing around $300, and can contribute to overall power gains.
Combining Mods for Maximum Gains
For those looking to maximize power gains, combining several of these modifications can yield impressive results. A common approach is to pair an ECU tune with a cold air intake and an upgraded intercooler. This combination can easily push the B9 S4 into the 400 horsepower range while staying under the $2,000 budget.
Considerations Before Modifying
Before making any modifications, it’s essential to consider a few factors:
- Warranty implications
- Local emissions regulations
- Potential for increased wear on engine components
Conclusion
The Audi B9 S4 offers a solid platform for performance enthusiasts. With a budget of $2,000, there are several modifications available that can significantly enhance power and driving enjoyment. By selecting the right combination of mods, drivers can experience the thrill of increased horsepower while maintaining reliability and drivability.