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The Mazda FD RX-7 is a beloved sports car, known for its lightweight design and rotary engine. As enthusiasts seek to unlock higher power levels from their vehicles, upgrading the fuel system becomes essential. This article will explore various brands, associated costs, and the expected gains from upgrading your FD RX-7’s fuel system.
Importance of Upgrading the Fuel System
Upgrading the fuel system is critical for enhancing performance. The stock fuel system may not provide sufficient fuel flow to support higher horsepower levels. Here are a few reasons why an upgrade is essential:
- Increased horsepower potential
- Improved engine reliability
- Better throttle response
Key Components of the Fuel System
Several components make up the fuel system. Upgrading these parts can lead to significant performance improvements:
- Fuel Pumps
- Fuel Injectors
- Fuel Pressure Regulators
- Fuel Lines
Fuel Pumps
Upgrading the fuel pump is often the first step. A high-flow fuel pump ensures that your engine receives the necessary fuel under high demand conditions. Popular options include:
- Walbro 255 LPH Fuel Pump
- DeatschWerks DW300 Fuel Pump
- Fuel Labs Fuel Pump
Fuel Injectors
Fuel injectors play a crucial role in delivering the right amount of fuel to the engine. Upgrading to larger injectors can help accommodate increased power. Consider these brands:
- RC Engineering Injectors
- Injector Dynamics
- Siemens Deka Injectors
Fuel Pressure Regulators
A fuel pressure regulator ensures that the fuel pressure remains consistent, which is vital for performance tuning. Some recommended options include:
- AEM Adjustable Fuel Pressure Regulator
- Radium Engineering Fuel Pressure Regulator
- Fuelab Fuel Pressure Regulator
Cost Considerations
When upgrading your FD RX-7’s fuel system, it’s essential to consider the costs associated with each component. Here’s a breakdown of estimated costs:
- Fuel Pump: $100 – $300
- Fuel Injectors: $300 – $600 (set of four)
- Fuel Pressure Regulator: $100 – $250
- Fuel Lines: $50 – $150
Expected Gains from Upgrades
Upgrading your fuel system can lead to impressive power gains. While results will vary based on other modifications, here are some general expectations:
- 10-20% increase in horsepower with upgraded injectors and pump
- Improved throttle response and drivability
- Enhanced tuning capabilities for higher boost levels
Conclusion
Upgrading the fuel system of your FD RX-7 is a vital step towards achieving higher power levels. By investing in quality components and understanding the associated costs, you can significantly enhance your vehicle’s performance. Whether you’re a weekend racer or a daily driver, these upgrades will ensure your rotary engine runs efficiently and powerfully.