Table of Contents
The Audi B8 S4 is known for its performance, luxury, and engineering excellence. Among the various upgrades available, the EA888 IS38 turbocharger stands out as a popular choice among enthusiasts looking to enhance their vehicle’s performance significantly. This article will compare the stock turbocharger to the IS38 upgrade, focusing on the impressive gains in rear wheel horsepower.
Understanding the EA888 Engine
The EA888 engine is a 2.0-liter turbocharged inline-four that powers several Audi and Volkswagen models. It is known for its tunability and robust performance characteristics. The engine features advanced technologies such as direct fuel injection and variable valve timing, which contribute to its efficiency and power delivery.
Stock Turbocharger Performance
The stock turbocharger on the B8 S4 is designed to provide a balance between performance and reliability. It typically produces around 333 horsepower and 325 lb-ft of torque at the crank. However, many enthusiasts feel that the stock setup limits the car’s true potential.
IS38 Turbocharger Overview
The IS38 turbocharger is a larger unit found in the Audi S3 and Volkswagen Golf R. It offers improved airflow and efficiency, allowing for greater power output. When installed on a B8 S4, the IS38 turbocharger can unlock significant horsepower gains, making it a popular choice for those seeking performance upgrades.
Performance Gains with IS38 Upgrade
Upgrading to the IS38 turbocharger can yield impressive results. Many B8 S4 owners report gains of over 100 rear wheel horsepower compared to the stock setup. This upgrade transforms the driving experience, providing enhanced acceleration and overall performance.
Key Benefits of the IS38 Upgrade
- Significantly increased horsepower and torque.
- Improved throttle response and power delivery.
- Enhanced tuning potential for further modifications.
- Better performance at higher RPMs.
Installation Considerations
Installing the IS38 turbocharger requires careful planning and execution. It is essential to consider the following:
- Compatibility with existing components.
- Necessary supporting modifications, such as upgraded intercoolers and exhaust systems.
- Professional tuning to ensure optimal performance and reliability.
Tuning for Maximum Performance
Proper tuning is crucial after upgrading to the IS38 turbocharger. A custom tune will optimize fuel delivery, boost levels, and ignition timing, ensuring that the engine runs efficiently and reliably. Many enthusiasts opt for reputable tuning companies that specialize in Audi performance.
Real-World Performance Comparisons
To illustrate the performance differences between the stock setup and the IS38 upgrade, consider the following comparisons:
- 0-60 mph times: Stock vs. IS38 upgrade (approx. 4.5 seconds vs. 3.5 seconds).
- Quarter-mile times: Stock vs. IS38 upgrade (approx. 13.2 seconds vs. 11.8 seconds).
- Top speed: Stock vs. IS38 upgrade (limited to 155 mph vs. potential 165+ mph).
Cost of the Upgrade
The cost of upgrading to an IS38 turbocharger can vary based on several factors, including:
- Cost of the turbocharger itself.
- Labor costs for installation.
- Additional parts required for a complete upgrade.
- Tuning expenses.
Conclusion
The EA888 IS38 upgrade presents a compelling option for B8 S4 owners looking to unleash the full potential of their vehicle. With the possibility of achieving over 100 rear wheel horsepower gains, the upgrade significantly enhances performance, making it a worthwhile investment for enthusiasts. Proper installation and tuning are essential to maximize the benefits of this upgrade, ensuring a thrilling driving experience.