Table of Contents
The MR2 Turbo SW20 is a beloved sports car known for its mid-engine layout and turbocharged performance. One of the most effective upgrades for enhancing its power output is the installation of larger fuel injectors, specifically 575cc injectors. This article explores the impact of this upgrade on your MR2 Turbo SW20’s performance.
Understanding Fuel Injectors
Fuel injectors play a crucial role in delivering the right amount of fuel to the engine for optimal combustion. Upgrading to larger injectors allows for increased fuel flow, which can significantly enhance the engine’s performance, especially under boost conditions.
Benefits of Upgrading to 575cc Injectors
Upgrading to 575cc injectors can provide several benefits for your MR2 Turbo SW20:
- Increased Fuel Flow: Larger injectors can supply more fuel, which is essential for higher horsepower applications.
- Improved Power Output: More fuel allows for a richer air-fuel mixture, leading to improved combustion and power gains.
- Better Tuning Flexibility: With larger injectors, tuning becomes more flexible, allowing for adjustments to maximize performance.
- Enhanced Throttle Response: Upgraded injectors can improve throttle response, making the car feel more responsive.
How to Install 575cc Injectors
Installing 575cc injectors in your MR2 Turbo SW20 requires some mechanical knowledge and tools. Here’s a brief overview of the installation process:
- Gather Tools: You will need basic hand tools, a fuel pressure gauge, and safety equipment.
- Relieve Fuel Pressure: Disconnect the fuel pump fuse and start the engine to relieve pressure in the fuel lines.
- Remove the Intake Manifold: This step is necessary to access the fuel rail and injectors.
- Replace Injectors: Remove the old injectors and replace them with the new 575cc injectors, ensuring proper sealing.
- Reassemble: Reinstall the intake manifold and reconnect all components.
- Test for Leaks: Reconnect the fuel pump fuse and check for leaks before starting the engine.
Tuning Your MR2 After Injector Upgrade
After upgrading to 575cc injectors, it is essential to tune your MR2 Turbo SW20 to take full advantage of the increased fuel flow. Proper tuning ensures that the air-fuel mixture is optimized for performance and efficiency.
- ECU Remapping: A remap of the ECU is necessary to adjust fuel maps and timing for the new injectors.
- Dyno Testing: Use a dynamometer to measure power output and make further adjustments as needed.
- Monitor Air-Fuel Ratios: Keep an eye on air-fuel ratios to avoid running too rich or too lean.
Potential Drawbacks of Larger Injectors
While upgrading to 575cc injectors has many advantages, there are potential drawbacks to consider:
- Fuel Consumption: Larger injectors can lead to increased fuel consumption, especially if the car is driven aggressively.
- Idle Quality: Poor tuning may result in rough idle or stalling issues.
- Cost: The cost of injectors and tuning can add up, making it a significant investment.
Conclusion
Upgrading to 575cc injectors is a valuable modification for MR2 Turbo SW20 enthusiasts looking to boost their car’s performance. With increased fuel flow, improved power output, and better tuning flexibility, this upgrade can significantly enhance the driving experience. However, it is essential to consider the potential drawbacks and ensure proper installation and tuning for optimal results.