Table of Contents
Upgrading the fuel pump in your BMW 335i can significantly enhance performance, especially when paired with modifications. The DeatschWerks DW200 fuel pump is a popular choice among enthusiasts looking for reliability and power gains. In this article, we will explore the installation process, expected power gains, and a cost analysis for the DW200 fuel pump.
Why Upgrade to the DeatschWerks DW200 Fuel Pump?
The DW200 fuel pump is designed to provide a higher flow rate compared to the stock pump, making it ideal for modified BMW 335i models. Here are some reasons to consider this upgrade:
- Increased Fuel Flow: Supports higher horsepower applications.
- Reliability: Built to withstand higher pressures and temperatures.
- Easy Installation: Direct fit for BMW 335i models.
Installation Process
Installing the DW200 fuel pump requires some basic tools and a bit of mechanical knowledge. Follow these steps for a successful installation:
- Tools Required:
- Socket set
- Wrenches
- Flathead screwdriver
- Phillips screwdriver
- Fuel line disconnect tool
- Safety Precautions:
- Disconnect the battery.
- Work in a well-ventilated area.
- Wear safety goggles and gloves.
Step-by-Step Installation
Follow these detailed steps to install the DW200 fuel pump:
- Remove the Rear Seat: Use a socket set to remove the bolts securing the rear seat. Lift the seat to access the fuel pump access cover.
- Access the Fuel Pump: Unscrew the access cover and disconnect the fuel lines using a fuel line disconnect tool.
- Remove the Stock Fuel Pump: Disconnect the electrical connector and unscrew the pump from the assembly.
- Install the DW200 Pump: Place the DW200 pump into the assembly, ensuring a secure fit. Reconnect the electrical connector.
- Reattach Fuel Lines: Connect the fuel lines back to the pump, ensuring there are no leaks.
- Reinstall the Access Cover: Screw the access cover back into place and reattach the rear seat.
- Reconnect the Battery: Finally, reconnect the battery and start the engine to check for proper operation.
Expected Power Gains
One of the main reasons for upgrading the fuel pump is the potential for increased power. The DW200 fuel pump can support higher fuel demands, which is essential for modified engines. Here’s what you can expect:
- Improved Throttle Response: Enhanced fuel delivery leads to quicker throttle response.
- Higher Horsepower: Users have reported gains of up to 30-50 horsepower with proper tuning.
- Better Fuel Efficiency: A well-functioning fuel pump can improve overall fuel efficiency under load.
Cost Analysis
Understanding the costs associated with upgrading to the DW200 fuel pump is crucial for budget planning. Here’s a breakdown of the expenses involved:
- Cost of the DW200 Fuel Pump: Approximately $200-$300, depending on the retailer.
- Installation Costs: If you choose to have a professional install the pump, expect to pay around $100-$200 in labor.
- Additional Parts: Consider costs for any additional parts or tools needed, which may add $50-$100.
Conclusion
Upgrading to the DeatschWerks DW200 fuel pump in your BMW 335i can yield significant performance improvements. With increased fuel flow, enhanced throttle response, and potential horsepower gains, this upgrade is worth considering for enthusiasts. While the initial costs may seem high, the benefits in performance and reliability can make it a valuable investment for your vehicle.