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The Mazda NA Miata is a beloved sports car, known for its lightweight design and exceptional handling. Enthusiasts often look for ways to increase horsepower without breaking the bank. In this article, we will explore the best intake and exhaust modifications that can help you achieve 20-30 horsepower gains for under $500.
Understanding the NA Miata
The first generation of the Mazda Miata, known as the NA, was produced from 1989 to 1997. It features a 1.6L or 1.8L inline-four engine, which is known for its responsiveness and tunability. By optimizing the intake and exhaust systems, you can significantly enhance the performance of your NA Miata.
Intake Modifications
Upgrading the intake system is one of the most effective ways to increase engine performance. Here are some top recommendations for intake mods that can help you achieve your horsepower goals:
- Cold Air Intake System: A cold air intake can lower the intake air temperature, allowing for denser air and improved combustion. Look for options like the RoadsterSport Cold Air Intake.
- High-Flow Air Filter: Replacing the factory air filter with a high-flow option can improve airflow without a complete intake system change. Brands like K&N offer great filters.
- Intake Manifold Upgrade: Upgrading to a performance intake manifold can enhance airflow and improve throttle response. Consider options like the Miata Performance Intake Manifold.
Exhaust Modifications
After optimizing the intake, the next step is to enhance the exhaust system. A free-flowing exhaust will allow your engine to expel gases more efficiently, leading to increased power. Here are some recommended exhaust mods:
- Cat-Back Exhaust System: A cat-back exhaust system replaces the exhaust from the catalytic converter back. Look for systems like the Racing Beat Cat-Back Exhaust for improved flow and sound.
- Header Upgrade: Installing a performance header can significantly improve exhaust flow. The MX-5 Header is a popular choice among Miata enthusiasts.
- High-Flow Catalytic Converter: A high-flow catalytic converter can reduce back pressure while maintaining emissions compliance. Brands like Vibrant offer good options.
Combining Intake and Exhaust Mods
For optimal performance, consider combining both intake and exhaust modifications. This synergy can maximize horsepower gains and improve overall engine efficiency. Here are a few combinations to consider:
- Cold Air Intake + Cat-Back Exhaust: This combination provides a significant airflow improvement and can yield noticeable horsepower gains.
- High-Flow Filter + Header Upgrade: Enhancing both intake and exhaust flow can lead to a balanced performance increase.
- Intake Manifold + High-Flow Catalytic Converter: This setup can optimize airflow throughout the engine, leading to a smoother power delivery.
Budget Considerations
While it’s possible to achieve significant gains under $500, careful budgeting is essential. Here are some tips to keep costs down:
- Shop for Used Parts: Many enthusiasts sell quality used parts online, which can save you money.
- DIY Installations: Performing the installation yourself can eliminate labor costs. Plenty of online resources can guide you through the process.
- Look for Package Deals: Some retailers offer discounts when you buy multiple parts together.
Conclusion
Enhancing your NA Miata’s performance through intake and exhaust modifications can lead to impressive horsepower gains without exceeding a $500 budget. By carefully selecting the right parts and considering combinations, you can transform your Miata into a more powerful and enjoyable driving experience.