4 Cylinder BMW Leaps To B58 Levels With This!

Introduction

This tutorial guides you through upgrading the intake manifold of a BMW 330i's B48 4-cylinder engine, enhancing its performance to levels comparable to the B58 6-cylinder engine. This modification is not just a standard upgrade; it's a strategic enhancement designed to maximize the potential of the B48 engine, pushing the boundaries of what a 4-cylinder can achieve.

Step 1: Gather Necessary Tools and Parts

Before starting the upgrade, ensure you have all the required tools and components:

• Tools Needed:

  • Socket set
  • Torque wrench
  • Screwdrivers
  • Pliers
  • Engine lift (optional, for easier access)

• Parts Required:

  • IPOS intake manifold (purchase via affiliate link: IPOS Manifold)
  • Additional parts may include a turbo, downpipe, charge pipe, and a fuel kit (find links for these in the video description).

Step 2: Prepare the Engine for Upgrade

Prepare your BMW 330i for the intake manifold upgrade:

• Disconnect the Battery:

  • Remove the negative terminal of the battery to avoid any electrical issues during the upgrade.

• Remove Engine Covers:

  • Take off any plastic engine covers to gain access to the manifold.

• Drain Coolant (if necessary):

  • Depending on your setup, you may need to drain the coolant to prevent spills during the process.

Step 3: Remove the Old Intake Manifold

Carefully detach the existing intake manifold from the engine:

1. Unplug Sensors and Wiring:

   • Disconnect any electrical connections leading to the old manifold.

2. Loosen Bolts:

   • Use a socket set to carefully unscrew and remove the bolts securing the manifold.

3. Lift Off the Old Manifold:

   • Gently lift the old intake manifold off the engine. Take care not to damage any surrounding components.

Step 4: Install the New Intake Manifold

Now it’s time to install the IPOS intake manifold:

1. Clean the Engine Surface:

   • Ensure the engine surface is free of debris or old gasket material for a proper seal.

2. Position the New Manifold:

   • Align the new manifold with the mounting points on the engine.

3. Secure Bolts:

   • Hand-tighten the bolts first, then use a torque wrench to tighten them to the manufacturer’s specifications.

4. Reconnect Sensors and Wiring:

   • Plug in all electrical connections and ensure they are secure.

Step 5: Final Checks and Reassembly

Before completing the installation, perform final checks:

• Inspect for Leaks:

  • Check around the manifold for any signs of gaps or leaks.

• Reconnect Battery:

  • Reattach the negative terminal of the battery.

• Reinstall Engine Covers:

  • Place any removed engine covers back into position.

Step 6: Test the Upgrade

Once everything is reassembled, it’s time to test your upgrade:

• Start the Engine:

  • Turn on the engine and listen for any unusual noises.

• Monitor Performance:

  • Take the car for a test drive and pay attention to throttle response and overall performance improvements.

Conclusion

By following these steps, you have successfully upgraded your BMW 330i's intake manifold, enhancing its performance significantly. This modification can lead to increased horsepower and overall better engine efficiency. For further enhancements, consider additional upgrades such as a turbo or downpipe, as mentioned in the video. Enjoy your newly transformed driving experience!