Turbocharger Swaps on the Bmw 335i: How to Achieve 500+ Hp with Garrett or Borgwarner Upgrades

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The BMW 335i is a beloved vehicle among car enthusiasts, particularly for its balance of performance and luxury. One of the most effective ways to enhance its power output is through turbocharger upgrades. This article will explore how to achieve over 500 horsepower using Garrett or BorgWarner turbochargers.

Understanding the Basics of Turbocharging

Turbocharging is a technology that increases an engine’s efficiency and power output by forcing more air into the combustion chamber. This process allows for more fuel to be burned, resulting in higher horsepower and torque.

Why Upgrade to Garrett or BorgWarner Turbochargers?

Garrett and BorgWarner are renowned manufacturers in the turbocharger industry, known for their reliability and performance. Upgrading to these brands can significantly enhance your BMW 335i’s capabilities.

  • Garrett Turbochargers: Known for their innovative technology and performance, offering a range of options suited for various horsepower goals.
  • BorgWarner Turbochargers: Renowned for their efficiency and durability, providing excellent spool times and power delivery.

Choosing the Right Turbocharger

When selecting a turbocharger, consider your performance goals, budget, and the specific characteristics of your BMW 335i. Both Garrett and BorgWarner offer various models that cater to different needs.

  • Garrett GTX2867R: A versatile option that provides excellent power and response.
  • Garrett GTX3071R: Ideal for those looking to achieve higher horsepower figures with a quick spool time.
  • BorgWarner EFR 7670: Known for its lightweight design and quick spool, perfect for street and track use.
  • BorgWarner S200SX: A robust choice for serious power seekers, capable of supporting high horsepower builds.

Installation Process

Installing a new turbocharger requires precision and care. Here’s a general guide to help you through the process.

  • Gather necessary tools and parts, including the new turbocharger, gaskets, and oil lines.
  • Remove the existing turbocharger by disconnecting the intake and exhaust piping, along with any electrical connections.
  • Install the new turbocharger, ensuring all connections are secure.
  • Reassemble the intake and exhaust systems, and double-check for any leaks.
  • Reprogram the ECU to accommodate the new turbocharger settings.

Tuning for Maximum Performance

After installation, tuning is essential to unlock the full potential of your new turbocharger. This process involves adjusting the engine’s fuel maps and timing settings.

  • Use a reputable tuning software or service to ensure optimal performance.
  • Monitor air-fuel ratios to prevent lean conditions that can damage the engine.
  • Consider dyno tuning for precise adjustments and performance measurements.

Supporting Modifications

To achieve and maintain 500+ horsepower, additional modifications may be necessary. These enhancements can help support the increased power levels and improve overall vehicle performance.

  • Upgraded intercooler: Enhances cooling efficiency and reduces intake temperatures.
  • High-flow fuel injectors: Ensure adequate fuel delivery for higher horsepower outputs.
  • Performance exhaust system: Reduces back pressure and improves exhaust flow.
  • Upgraded engine internals: Consider forged pistons and rods for added durability.

Conclusion

Upgrading the turbocharger on your BMW 335i to a Garrett or BorgWarner model can unlock impressive performance gains. With careful selection, proper installation, and tuning, achieving over 500 horsepower is within reach. Remember to consider supporting modifications to ensure your vehicle can handle the increased power effectively.