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The Subaru WRX is a beloved vehicle among car enthusiasts, particularly those who appreciate the performance benefits of turbocharging. One of the key upgrades that can significantly enhance the power output of a turbocharged Subaru WRX is a fuel pump upgrade. In this article, we will explore how upgrading to APS or Walbro fuel pumps can help you achieve an impressive 50+ horsepower increase.
Understanding the Importance of Fuel Delivery
Fuel delivery is crucial in maximizing the performance of any turbocharged engine. The stock fuel pump may struggle to supply adequate fuel under high-performance conditions, leading to potential power loss and engine damage. Upgrading to a high-performance fuel pump ensures that your engine receives the necessary fuel to perform optimally.
Choosing Between APS and Walbro Fuel Pumps
When it comes to upgrading your fuel pump, two popular options are APS and Walbro. Both brands offer reliable and high-performance pumps, but there are some differences to consider.
APS Fuel Pumps
APS fuel pumps are known for their robust construction and ability to deliver consistent fuel pressure. They are designed specifically for performance applications and can handle the increased demands of turbocharged engines.
Walbro Fuel Pumps
Walbro is a well-established name in the aftermarket fuel pump industry. Their pumps are renowned for reliability and performance. Walbro fuel pumps are capable of supporting high horsepower applications, making them a popular choice among Subaru WRX owners.
Benefits of Upgrading Your Fuel Pump
Upgrading to a high-performance fuel pump like APS or Walbro offers several benefits for your turbocharged Subaru WRX:
- Increased Fuel Flow: High-performance pumps provide greater fuel flow, essential for maximizing horsepower.
- Improved Reliability: Upgraded pumps are built to withstand the rigors of high-performance driving.
- Enhanced Performance: Achieving up to 50+ horsepower gains with proper tuning and fuel delivery.
Installation Process
Installing a new fuel pump in your Subaru WRX is a straightforward process, but it requires attention to detail and safety precautions. Here’s a brief overview of the installation process:
- Gather Tools and Materials: Ensure you have the necessary tools, including wrenches, screwdrivers, and safety equipment.
- Relieve Fuel Pressure: Before beginning, relieve fuel pressure to avoid spills and accidents.
- Remove Fuel Pump Access Panel: Access the fuel pump by removing the access panel in the trunk.
- Disconnect Wiring and Fuel Lines: Carefully disconnect the electrical connectors and fuel lines from the stock pump.
- Install New Fuel Pump: Follow the manufacturer’s instructions to install the new APS or Walbro pump.
- Reassemble and Test: Reassemble any removed components and test the system for leaks.
Tuning for Maximum Performance
After upgrading your fuel pump, it is crucial to tune your engine to take full advantage of the increased fuel delivery. Proper tuning ensures that your engine runs efficiently and safely, maximizing the potential horsepower gains.
Choosing a Tuning Solution
There are several tuning solutions available for Subaru WRX owners, ranging from handheld tuners to custom dyno tuning. Choosing the right option depends on your specific goals and budget.
- Handheld Tuners: Convenient and user-friendly, ideal for basic adjustments.
- Custom Dyno Tuning: Offers the most precise tuning for maximum performance, often recommended for serious enthusiasts.
Conclusion
Upgrading the fuel pump in your turbocharged Subaru WRX is a vital step towards achieving significant horsepower gains. Whether you choose APS or Walbro, both options provide reliable performance enhancements. Remember to tune your engine for optimal results, and enjoy the thrilling performance of your upgraded WRX.