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The Subaru BRZ FA20 engine is known for its balanced performance and engaging driving experience. However, many enthusiasts seek to enhance its power output without breaking the bank. This article explores cost-effective intake and exhaust modifications that can help you add approximately 25 horsepower to your BRZ FA20.
Understanding the FA20 Engine
The FA20 engine is a 2.0-liter flat-four engine that powers the Subaru BRZ and Toyota 86. It features a naturally aspirated design, which means it relies on atmospheric pressure to draw air into the engine. Understanding how this engine works is crucial for making effective modifications.
Benefits of Intake and Exhaust Mods
Intake and exhaust modifications can significantly improve engine performance. Here are some benefits:
- Increased airflow for better combustion
- Improved throttle response
- Enhanced engine sound
- Potential for better fuel efficiency
Cost-Effective Intake Modifications
Upgrading the intake system is one of the most straightforward ways to increase horsepower. Here are some cost-effective options:
- Cold Air Intake (CAI): A cold air intake system replaces the factory airbox and allows cooler air to enter the engine, improving combustion efficiency. Prices typically range from $200 to $400.
- High-Performance Air Filter: Swapping out the stock air filter for a high-flow performance filter can improve airflow without significant cost. Expect to pay around $50 to $100.
- Intake Manifold Upgrade: Upgrading to an aftermarket intake manifold can enhance airflow and throttle response. This mod can cost between $300 and $600.
Cost-Effective Exhaust Modifications
Exhaust modifications can also yield significant power gains. Consider these options:
- Cat-Back Exhaust System: A cat-back exhaust system replaces the exhaust from the catalytic converter back. This modification improves exhaust flow and can cost between $500 and $1,000.
- High-Flow Catalytic Converter: Upgrading to a high-flow catalytic converter can reduce back pressure and improve performance. Prices range from $200 to $500.
- Header Upgrade: Replacing the factory headers with aftermarket options can improve exhaust flow significantly. This mod can cost between $300 and $700.
Combining Mods for Maximum Impact
For the best results, consider combining intake and exhaust modifications. This synergy can lead to a more substantial increase in horsepower. Here are some recommended combinations:
- Cold Air Intake + Cat-Back Exhaust
- High-Performance Air Filter + High-Flow Catalytic Converter
- Intake Manifold Upgrade + Header Upgrade
Installation Considerations
While some modifications can be done at home, others may require professional installation. Consider the following:
- DIY Installation: Cold air intakes and high-performance air filters are typically easy to install and can be done with basic tools.
- Professional Help: Exhaust modifications, especially headers, may require welding and should be performed by a qualified mechanic.
Budgeting for Mods
When planning your modifications, it’s essential to budget accordingly. Here’s a rough estimate of costs:
- Intake Modifications: $200 – $1,000
- Exhaust Modifications: $500 – $1,700
- Installation Costs: $0 – $500 (if applicable)
Conclusion
Enhancing the performance of your Subaru BRZ FA20 engine through intake and exhaust modifications can be both cost-effective and rewarding. By investing in the right components and potentially combining multiple upgrades, you can achieve a significant horsepower increase while enjoying the process of tuning your vehicle. Always remember to research and choose reputable brands for your mods to ensure the best results.