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The NC Miata is a beloved sports car known for its lightweight design and agile handling. However, many enthusiasts seek to increase its top speed to 140 mph. This article will explore various performance modifications and their associated costs to help you achieve this goal.
Understanding the NC Miata
The NC Miata, produced from 2006 to 2015, features a 2.0L inline-four engine that produces around 167 horsepower. While this is sufficient for spirited driving, many owners desire more speed. To safely increase the top speed, several modifications can be made.
Performance Modifications
1. Engine Tuning
One of the most effective ways to increase top speed is through engine tuning. This involves recalibrating the engine’s computer to optimize performance.
- Cost: $300 – $600
- Benefits: Increased horsepower and torque, improved throttle response.
2. Cold Air Intake
A cold air intake system allows cooler air to enter the engine, which can improve combustion efficiency and power output.
- Cost: $250 – $500
- Benefits: Increased horsepower, better engine sound.
3. Exhaust System Upgrade
Upgrading the exhaust system can reduce back pressure and improve exhaust flow, leading to better engine performance.
- Cost: $400 – $1,200
- Benefits: Increased horsepower, enhanced exhaust note.
4. Performance ECU
Installing a performance ECU can further enhance tuning capabilities, allowing for more aggressive settings and adjustments.
- Cost: $600 – $1,200
- Benefits: Maximum performance tuning, improved fuel efficiency.
5. Turbocharger or Supercharger
Adding a turbocharger or supercharger can significantly boost horsepower, potentially exceeding 200 hp with proper tuning.
- Cost: $3,000 – $5,000
- Benefits: Dramatic increase in power, higher top speed potential.
Suspension and Handling Upgrades
1. Coilover Suspension
Upgrading to a coilover suspension system can enhance handling and stability at high speeds, allowing for better control.
- Cost: $1,000 – $2,500
- Benefits: Improved handling, adjustable ride height.
2. Performance Tires
Investing in high-performance tires can significantly improve grip and stability, especially at higher speeds.
- Cost: $600 – $1,200 (set of four)
- Benefits: Better traction, enhanced safety.
Braking System Enhancements
1. Upgraded Brake Pads and Rotors
Enhancing the braking system is crucial when increasing speed. Upgraded pads and rotors provide better stopping power.
- Cost: $400 – $800
- Benefits: Improved braking performance, reduced fade.
2. Big Brake Kit
A big brake kit can further enhance stopping power, especially necessary for higher speeds.
- Cost: $1,500 – $3,000
- Benefits: Superior braking performance, increased safety.
Cost Analysis
When considering modifications to increase the NC Miata’s top speed to 140 mph, it’s essential to evaluate the total costs involved. Below is a breakdown of potential expenses:
- Engine Tuning: $300 – $600
- Cold Air Intake: $250 – $500
- Exhaust System Upgrade: $400 – $1,200
- Performance ECU: $600 – $1,200
- Turbocharger/Supercharger: $3,000 – $5,000
- Coilover Suspension: $1,000 – $2,500
- Performance Tires: $600 – $1,200
- Brake Upgrades: $400 – $3,000
In total, the cost to achieve a top speed of 140 mph could range from approximately $7,250 to $14,300, depending on the modifications chosen.
Conclusion
Increasing the NC Miata’s top speed to 140 mph requires careful planning and investment in performance modifications. By considering the options outlined in this article, you can make informed decisions to enhance your driving experience while ensuring safety and reliability.