Table of Contents
The NA Miata is a beloved sports car known for its lightweight design and exceptional handling. However, many enthusiasts seek to enhance its performance through a turbo swap. This guide provides a detailed, step-by-step approach to turbocharging your NA Miata, along with real-world power results to help you understand the potential gains.
Understanding the Basics of Turbocharging
Turbocharging involves forcing more air into the engine, allowing it to burn more fuel and produce more power. This process requires additional components and modifications to ensure the engine can handle the increased performance.
Required Parts for the Turbo Swap
- Turbocharger kit specific for NA Miata
- Upgraded fuel injectors
- Intercooler and piping
- Turbo manifold
- Oil feed and return lines
- Boost controller
- ECU tuning solution
- Exhaust system modifications
Step-by-Step Turbo Swap Process
Step 1: Preparation
Before starting the turbo swap, ensure you have all necessary tools and parts. A clean workspace is essential for a successful installation.
Step 2: Remove the Stock Components
Begin by disconnecting the battery. Remove the intake, exhaust manifold, and any other components obstructing access to the engine bay. It’s crucial to keep track of all bolts and parts for reassembly.
Step 3: Install the Turbo Manifold
Attach the turbo manifold to the engine block. Ensure all gaskets are in place to prevent leaks. Tighten the bolts to the manufacturer’s specifications.
Step 4: Mount the Turbocharger
Secure the turbocharger to the manifold. Connect the oil feed and return lines, ensuring they are properly routed to avoid any kinks or restrictions.
Step 5: Install the Intercooler
Position the intercooler in front of the radiator. Connect the piping from the turbo to the intercooler and then to the intake manifold. Make sure all connections are tight and leak-free.
Step 6: Upgrade Fuel System
Replace the stock fuel injectors with upgraded ones to accommodate the increased fuel demand. Ensure the fuel pump is also capable of supplying the necessary fuel pressure.
Step 7: Exhaust Modifications
Modify the exhaust system to allow for proper flow from the turbo. This may include replacing the downpipe and cat-back exhaust system.
Step 8: ECU Tuning
Reprogram the ECU to optimize the engine’s performance with the new turbo setup. This step is crucial for achieving the desired power levels and ensuring engine longevity.
Step 9: Final Checks and Testing
Before starting the engine, double-check all connections and fittings. Once satisfied, reconnect the battery and start the engine. Monitor for any leaks or unusual sounds.
Real-World Power Results
After completing the turbo swap, many Miata enthusiasts report significant power increases. Here are some typical results:
- Stock NA Miata power: ~115 hp
- After turbo swap: ~200-250 hp depending on boost levels
- Torque improvements: ~150-200 lb-ft
Conclusion
The NA Miata turbo swap is a rewarding project that can significantly enhance your car’s performance. By following this guide and using quality parts, you can achieve impressive power results while enjoying the process of building your dream car.