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The NA Miata, known for its lightweight design and exceptional handling, is a favorite among car enthusiasts. One of the most popular upgrades for this classic roadster is the turbo conversion. This article will explore the costs, installation process, and expected power gains from a turbo conversion on the NA Miata.
Understanding Turbo Conversions
A turbo conversion involves adding a turbocharger to the engine, which forces more air into the combustion chamber, allowing for more fuel to be burned and ultimately increasing power output. For NA Miata owners, this upgrade can significantly enhance the driving experience.
Cost of NA Miata Turbo Conversions
The cost of a turbo conversion can vary widely based on several factors, including the type of kit chosen, labor costs, and any additional modifications needed. Here’s a breakdown of potential expenses:
- Turbo Kit: $2,000 – $5,000
- Additional Parts: $500 – $1,500 (intercooler, piping, fuel injectors)
- Labor Costs: $500 – $2,000 (if not DIY)
- Tuning: $300 – $800 (for optimal performance)
Overall, a complete turbo conversion can range from $3,300 to $9,300, depending on the choices made.
Installation Process
Installing a turbo kit on an NA Miata can be a complex process, but with the right tools and knowledge, it can be accomplished in a few days. Here’s a general overview of the installation steps:
- Preparation: Gather all necessary tools and parts.
- Remove Existing Components: Take off the intake manifold, exhaust manifold, and any other components that may obstruct the installation.
- Install Turbocharger: Mount the turbocharger to the exhaust manifold and connect the necessary oil lines.
- Intercooler Installation: Fit the intercooler and connect piping to the turbo and intake.
- Fuel System Upgrade: Replace fuel injectors and upgrade the fuel pump if necessary.
- Wiring and Sensors: Install any required sensors and wiring for the turbo system.
- Tuning: Use a tuning device or visit a professional tuner to adjust the engine’s parameters for optimal performance.
Following these steps carefully will ensure a successful turbo installation.
Expected Power Gains
One of the most enticing aspects of a turbo conversion is the potential power increase. The NA Miata originally produces around 115 horsepower at the crank. After a turbo installation, owners can expect significant gains:
- Low Boost (5-7 psi): 150-180 horsepower
- Moderate Boost (8-10 psi): 180-220 horsepower
- High Boost (11-15 psi): 220-300 horsepower (with proper tuning and supporting mods)
These power figures can vary based on the specific turbo kit, tuning, and condition of the engine.
Considerations Before Turbocharging
Before proceeding with a turbo conversion, there are several factors to keep in mind:
- Engine Condition: Ensure the engine is in good health to handle the added stress.
- Budget: Consider the total cost of the conversion and any potential additional expenses.
- Insurance: Check with your insurance provider about coverage for modified vehicles.
- Legal Regulations: Be aware of local emissions and modification laws.
Taking these considerations into account will help you make an informed decision regarding your turbo conversion.
Conclusion
The NA Miata turbo conversion is an exciting way to enhance performance and driving enjoyment. While the costs can vary, the potential power gains make it a worthwhile investment for many enthusiasts. With careful planning and execution, you can transform your NA Miata into a turbocharged powerhouse.