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The BMW 335i is a beloved vehicle among car enthusiasts, particularly for its performance capabilities. One of the most significant upgrades you can make to enhance the power of your 335i is a turbocharger upgrade. In this article, we will explore how to upgrade your BMW 335i’s turbocharger to achieve over 400 horsepower using the Garrett GTX28 turbocharger.
Understanding the Stock Turbocharger
The stock turbocharger on the BMW 335i is designed to provide a balance between performance and reliability. However, for those seeking more power, the stock unit may not be sufficient. The stock turbo can typically produce around 300 horsepower, but with modifications, the potential for power can be significantly increased.
Why Upgrade to the Garrett GTX28?
The Garrett GTX28 is a popular choice for BMW enthusiasts looking to push their vehicles to the next level. Here are several reasons to consider this upgrade:
- High Flow Rates: The GTX28 is designed to support high horsepower outputs, making it ideal for builds aiming for 400+ hp.
- Improved Efficiency: This turbocharger offers better efficiency at higher boost levels compared to the stock unit.
- Durability: Garrett’s engineering ensures that the GTX28 can withstand the rigors of high-performance applications.
Key Components Needed for the Upgrade
To successfully upgrade to the Garrett GTX28, several key components are necessary. These components will ensure that the turbocharger functions optimally and that your engine can handle the increased power:
- Upgraded Intercooler: A larger intercooler will help manage the increased heat generated by the higher boost levels.
- High-Flow Fuel Injectors: To support the increased fuel demand, high-flow injectors are essential.
- Aftermarket Fuel Pump: An upgraded fuel pump will ensure that your engine receives the necessary fuel supply.
- ECU Tune: A proper ECU tune is critical to optimize performance and ensure the engine runs smoothly with the new turbocharger.
Installation Process
The installation of the Garrett GTX28 turbocharger requires a solid understanding of automotive mechanics. Here’s a general overview of the installation process:
- Preparation: Ensure that you have all necessary tools and components before starting the installation.
- Remove the Stock Turbocharger: Disconnect the exhaust and intake components, and carefully remove the stock turbocharger.
- Install the Garrett GTX28: Position the new turbocharger in place and connect it to the exhaust manifold and intake system.
- Reinstall Supporting Components: Reconnect the intercooler, fuel injectors, and any other components that were removed.
- ECU Reprogramming: Flash the ECU with a tune that is compatible with the new turbo setup.
Tuning for Maximum Performance
After the installation is complete, tuning is vital to ensure your BMW 335i performs at its best. A professional tuner can help maximize the potential of your new turbocharger. Here are some tuning considerations:
- Boost Levels: Adjusting boost levels will directly affect horsepower; ensure they are within safe limits.
- Air-Fuel Ratio: Monitor and adjust the air-fuel ratio for optimal combustion and performance.
- Ignition Timing: Proper ignition timing is crucial for preventing knock and ensuring smooth operation.
Expected Performance Gains
With the Garrett GTX28 turbocharger installed and properly tuned, your BMW 335i can achieve impressive performance gains. Many users report reaching over 400 horsepower, depending on supporting modifications and tuning quality. Here’s what you can expect:
- Increased Horsepower: Expect a significant boost in horsepower, often exceeding 400 hp.
- Improved Torque: Enhanced torque delivery provides better acceleration and responsiveness.
- Enhanced Driving Experience: Overall, the driving experience becomes more exhilarating with the increased power.
Conclusion
Upgrading your BMW 335i turbocharger to the Garrett GTX28 can unlock a new level of performance. With careful planning, the right components, and professional tuning, your 335i can reach over 400 horsepower, enhancing both power and enjoyment. Whether you’re a seasoned enthusiast or new to performance upgrades, this modification can transform your driving experience.