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Aftermarket exhaust systems have become increasingly popular among car enthusiasts, particularly for those looking to enhance performance and sound. In this article, we will explore the effectiveness of aftermarket exhausts, specifically focusing on the Borla S-Type exhaust system installed on a ND Mazda Miata. We aim to determine if this exhaust can indeed provide the promised 10-15 horsepower increase.
Understanding Aftermarket Exhausts
Aftermarket exhausts are designed to replace the factory-installed exhaust systems in vehicles. They are often made from higher quality materials and engineered for improved performance. Key benefits of aftermarket exhaust systems include:
- Improved exhaust flow
- Enhanced sound quality
- Weight reduction
- Potential increase in horsepower
Why Choose the Borla S-Type Exhaust?
The Borla S-Type exhaust is known for its distinct aggressive sound and performance benefits. It is particularly popular among ND Miata owners for several reasons:
- High-quality construction with T-304 stainless steel
- Mandrel-bent tubing for optimal flow
- Lifetime warranty
- Designed specifically for the ND Miata model
Testing Methodology
To evaluate the Borla S-Type’s performance, we conducted a series of tests on a stock ND Miata. The methodology included:
- Baseline dyno testing to measure initial horsepower and torque
- Installation of the Borla S-Type exhaust system
- Follow-up dyno testing to assess changes in performance
- Sound level measurements before and after installation
Baseline Performance Results
Before installing the Borla S-Type exhaust, the ND Miata was tested on a dynamometer to establish baseline performance metrics. The results showed:
- Horsepower: 155 hp @ 7,000 RPM
- Torque: 148 lb-ft @ 4,600 RPM
Installation of the Borla S-Type Exhaust
The installation of the Borla S-Type exhaust was straightforward and took approximately two hours. Key steps included:
- Removing the factory exhaust system
- Installing the Borla S-Type exhaust components
- Ensuring proper alignment and secure fittings
Post-Installation Performance Results
After the installation, the ND Miata was retested on the dynamometer to measure the impact of the Borla S-Type exhaust. The results indicated:
- Horsepower: 168 hp @ 7,000 RPM
- Torque: 152 lb-ft @ 4,600 RPM
Performance Gains Analysis
The data collected from the dyno tests shows a clear improvement in both horsepower and torque after the installation of the Borla S-Type exhaust. The gains were:
- Horsepower increase: 13 hp
- Torque increase: 4 lb-ft
Sound Quality Assessment
One of the most significant aspects of aftermarket exhaust systems is the sound they produce. The Borla S-Type exhaust offers a deeper, more aggressive tone compared to the stock exhaust. Sound level measurements were taken at idle and during acceleration:
- Idle sound level: 72 dB
- Acceleration sound level: 88 dB
Cost vs. Performance Analysis
The Borla S-Type exhaust system is priced competitively in the aftermarket exhaust market. When considering the performance gains of 10-15 hp, the cost can be justified for enthusiasts looking to enhance their driving experience. Factors to consider include:
- Price of the Borla S-Type exhaust: $1,200
- Cost per horsepower gained: Approximately $92
- Potential for improved resale value
Conclusion
In conclusion, the Borla S-Type exhaust system for the ND Miata demonstrates a meaningful performance increase along with an enhanced sound profile. For those considering an aftermarket exhaust, the Borla S-Type is a worthy investment, providing both the performance gains and the auditory pleasure that many enthusiasts seek.