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The FA20 engine, known for its performance and efficiency, can be pushed to achieve impressive power levels. If you’re aiming for 350 horsepower, there are several upgrades and tuning options to consider. This article will guide you through the best modifications to reach this goal.
Understanding the FA20 Engine
The FA20 engine is a flat-four engine designed by Subaru. It features a DOHC configuration and is known for its lightweight design and low center of gravity. Understanding its architecture and capabilities is crucial for effective tuning.
Key Upgrades for Achieving 350 HP
- Turbocharger Upgrade
- High-Performance Intercooler
- Exhaust System Upgrade
- ECU Tuning
- Fuel System Enhancements
- Air Intake Modifications
Turbocharger Upgrade
One of the most effective ways to increase horsepower is by upgrading the turbocharger. A larger turbo can provide more boost, leading to higher power output. Consider options like the Garret GTX3071 or the BorgWarner EFR series for optimal performance.
High-Performance Intercooler
An efficient intercooler is essential for maintaining optimal intake temperatures. Upgrading to a larger, high-performance intercooler will help reduce heat soak and improve overall engine efficiency, allowing for higher boost levels without knocking.
Exhaust System Upgrade
A free-flowing exhaust system can significantly impact horsepower. Upgrading to a cat-back exhaust or a turbo-back system reduces back pressure, enhancing the engine’s ability to expel exhaust gases and improving performance.
ECU Tuning
After making hardware upgrades, tuning the engine’s ECU is crucial. A proper tune will optimize fuel maps, ignition timing, and boost levels, ensuring that the engine runs efficiently and safely at higher power levels.
Fuel System Enhancements
To support increased horsepower, the fuel system may require upgrades. Consider installing larger fuel injectors and a high-flow fuel pump to ensure adequate fuel supply under high loads.
Air Intake Modifications
Improving airflow into the engine is vital for performance. Upgrading to a high-flow air intake system can help the engine breathe better, leading to improved throttle response and power gains.
Additional Considerations
While the above upgrades are essential for achieving 350 horsepower, there are additional factors to consider for optimal performance and reliability.
- Engine Management System
- Cooling System Upgrades
- Regular Maintenance
- Performance Tires
Engine Management System
Investing in a standalone engine management system can provide more tuning flexibility and control over engine parameters. This can be beneficial for maximizing performance and ensuring reliability.
Cooling System Upgrades
Increased power output can lead to higher engine temperatures. Upgrading the cooling system with a larger radiator and improved fans can help maintain optimal operating temperatures, preventing overheating.
Regular Maintenance
Maintaining your FA20 engine is critical, especially after upgrades. Regular oil changes, checking for leaks, and monitoring performance can help ensure the longevity of your engine.
Performance Tires
With increased power comes the need for better traction. Upgrading to performance tires can help you harness the power of your FA20 engine, improving acceleration and cornering capabilities.
Conclusion
Achieving 350 horsepower from your FA20 engine is an ambitious yet attainable goal with the right upgrades and tuning. By focusing on key components such as the turbocharger, intercooler, and fuel system, and considering additional factors like engine management and cooling, you can unlock the full potential of your engine.