Bmw 335i Performance Turbo Upgrades: Installing a Borgwarner Efr for $2,500

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The BMW 335i is a powerhouse of performance and luxury, but for enthusiasts looking to take their driving experience to the next level, turbo upgrades can make a significant difference. One of the most popular options is the BorgWarner EFR turbocharger. This article will guide you through the process of installing a BorgWarner EFR turbo on your BMW 335i for around $2,500.

Understanding the BorgWarner EFR Turbocharger

The BorgWarner EFR (Engineered for Racing) turbocharger is known for its superior performance, efficiency, and durability. It offers several advantages over stock turbos, making it a popular choice among BMW enthusiasts. Here are some key features:

  • Lightweight Design: The EFR turbo is designed with a lightweight housing, which reduces turbo lag.
  • Integrated Wastegate: This feature simplifies installation and improves response.
  • High Efficiency: The EFR turbo provides more power with less exhaust energy.
  • Versatile Options: BorgWarner offers a range of sizes and specifications to suit different performance goals.

Preparing for Installation

Before diving into the installation process, it’s crucial to gather all necessary tools and parts. Here’s a checklist to help you prepare:

  • BorgWarner EFR Turbocharger
  • Turbocharger installation kit
  • Basic hand tools (wrenches, sockets, etc.)
  • Torque wrench
  • Coolant and oil for refills
  • Boost gauge (optional)

Step-by-Step Installation Guide

Step 1: Remove the Stock Turbocharger

Start by disconnecting the battery to prevent any electrical issues. Next, remove the stock turbocharger by following these steps:

  • Remove the intake and exhaust piping connected to the stock turbo.
  • Disconnect the oil and coolant lines.
  • Unbolt the turbo from the manifold and remove it from the engine bay.

Step 2: Install the BorgWarner EFR Turbo

With the stock turbo removed, it’s time to install the BorgWarner EFR turbo. Follow these steps:

  • Position the EFR turbo onto the manifold and secure it with bolts.
  • Reconnect the oil and coolant lines, ensuring there are no leaks.
  • Install the intake and exhaust piping.
  • If applicable, connect the integrated wastegate actuator.

Step 3: Final Checks and Reassembly

Before you start the engine, double-check all connections and fittings. Ensure everything is torqued to specifications. Once verified, reconnect the battery and proceed with the following:

  • Start the engine and let it idle for a few minutes.
  • Check for any leaks in the oil and coolant lines.
  • Monitor the boost pressure using a gauge if installed.

Performance Expectations

After installing the BorgWarner EFR turbo, you can expect significant performance improvements. Some of the benefits include:

  • Increased horsepower and torque.
  • Improved throttle response and acceleration.
  • Enhanced driving experience with more power on demand.

Conclusion

Upgrading to a BorgWarner EFR turbocharger on your BMW 335i is a worthwhile investment for performance enthusiasts. With a budget of around $2,500 and some mechanical skills, you can significantly enhance your vehicle’s performance. Always remember to follow safety precautions and consult a professional if you’re unsure about any steps in the installation process.