The 2019 Acura NSX stands as a pinnacle of automotive innovation, seamlessly integrating advanced hybrid technology with exhilarating supercar performance. Its twin-turbocharged V6 engine, paired with three electric motors, produces a combined output of 573 horsepower, delivering blistering acceleration and precise handling. While the factory exhaust system is engineered to balance emissions standards, sound refinement, and performance, many NSX enthusiasts seek to elevate their driving experience by upgrading to an aftermarket exhaust system. These enhancements can dramatically improve the vehicle’s auditory presence, unlock additional performance gains, reduce weight, and elevate the car's overall aesthetic appeal.

Why Upgrade Your NSX Exhaust System?

Upgrading the exhaust system on your 2019 Acura NSX is a popular modification among performance enthusiasts for several compelling reasons. The factory exhaust system is designed for a balance of sound control, emissions compliance, and durability, but aftermarket options can push the boundaries of what your NSX can offer. Here are the primary benefits of an upgraded exhaust system:

Improved Sound Quality and Character

One of the most immediate and noticeable effects of an aftermarket exhaust system is the change in sound. The stock exhaust tends to be subdued, particularly at lower RPMs, to meet noise regulations and provide a comfortable driving environment. Aftermarket systems often produce a deeper, more aggressive exhaust note that better matches the NSX’s sporty and exotic character. From a subtle growl during cruise to a spine-tingling roar under heavy acceleration, many exhaust systems allow drivers to experience the full auditory potential of the NSX’s powertrain.

Increased Performance and Efficiency

High-performance exhaust systems are designed with improved flow dynamics, reducing backpressure and increasing the efficiency of exhaust gas expulsion. This can lead to measurable gains in horsepower and torque, especially when paired with other modifications such as ECU tuning or upgraded intake systems. By optimizing the scavenging effect and minimizing restrictions, aftermarket exhausts help the engine breathe more freely, allowing the hybrid powertrain to deliver power more effectively.

Weight Reduction for Better Handling

Many aftermarket exhaust systems utilize lightweight materials such as titanium, stainless steel, or carbon fiber. These materials contribute to significant weight savings compared to the heavier stock components. Reducing weight not only enhances acceleration and braking performance but also improves the NSX’s already precise handling characteristics by lowering unsprung mass and improving weight distribution.

Enhanced Visual Aesthetics

Beyond performance and sound, exhaust upgrades can dramatically enhance the visual appeal of your NSX. Custom-designed exhaust tips crafted from carbon fiber or polished metals provide a distinctive look that complements the car’s aggressive styling. Some systems feature unique tip shapes, finishes, or integrated LED lighting, allowing owners to personalize their vehicle’s rear-end appearance.

Customization and Control

Certain aftermarket exhaust systems come equipped with valvetronic technology, which enables drivers to adjust the exhaust sound and flow on the fly. This feature is particularly valuable for hybrid supercars like the NSX, allowing owners to switch between a quiet, refined mode for everyday driving and a loud, race-inspired note for spirited sessions on the track or back roads.

Key Considerations Before Upgrading

Before investing in an aftermarket exhaust system for your 2019 Acura NSX, there are several important factors to consider to ensure compatibility and maintain the integrity of your vehicle.

Compatibility with the Hybrid Powertrain

The NSX’s hybrid setup integrates electric motors with the internal combustion engine, and the exhaust system plays a role in this complex architecture. Some exhaust modifications can interfere with sensors or emissions controls vital to the hybrid system’s operation. It is crucial to select an exhaust system specifically designed or verified for use with the NSX’s hybrid powertrain to avoid potential issues.

Emissions and Local Regulations

Many regions have strict emissions and noise regulations that aftermarket exhaust systems must comply with. Installing a system that is not emissions-legal or exceeds noise limits can result in fines, failed inspections, or voided warranties. Look for options that carry certifications such as CARB (California Air Resources Board) compliance if you reside in regulated areas.

Professional Installation

While some aftermarket exhausts are marketed as “bolt-on” with straightforward installation, professional installation is highly recommended. Experienced installers ensure proper fitment, correct sensor placement, and optimal performance tuning. Incorrect installation may lead to exhaust leaks, check engine lights, or diminished driving experience.

Warranty Implications

Upgrading your exhaust system may affect the manufacturer’s warranty, particularly if the modification causes related issues. Consult your Acura dealer or a trusted performance shop to understand the warranty coverage and discuss options to maintain protection where possible.

Top Aftermarket Exhaust Systems Compatible with the 2019 Acura NSX

Several aftermarket exhaust systems have garnered acclaim within the Acura NSX community for their quality, sound, and performance benefits. Below is an in-depth look at some of the best options available for the 2019 NSX.

1. Akrapovič Evolution Line Exhaust

Akrapovič is a globally recognized name in high-performance exhaust systems, known for advanced engineering and premium craftsmanship. Their Evolution Line exhaust for the NSX is crafted primarily from lightweight titanium, significantly reducing overall exhaust weight compared to the stock system.

  • Sound Profile: The Evolution Line produces a deep, aggressive tone that intensifies with engine rpm. It has a distinctive crackle on deceleration and a rich exhaust note that maintains refinement at lower speeds.
  • Performance Gains: By improving exhaust flow and reducing backpressure, Akrapovič reports gains in both horsepower and torque, along with enhanced throttle response.
  • Build Quality: The titanium construction offers durability and corrosion resistance, while also providing a high-tech, race-inspired aesthetic.
  • Additional Features: The system includes custom exhaust tips with laser-etched logos and offers options for various tip finishes.

Due to its premium materials and engineering, the Akrapovič system is positioned at the higher end of the price spectrum but is widely regarded as one of the best exhaust upgrades for the NSX.

2. Armytrix Valvetronic Exhaust System

The Armytrix Valvetronic system stands out for its innovative use of electronically controlled valves that allow drivers to vary the exhaust sound dynamically. This means you can enjoy a quiet, refined exhaust note during regular driving and open the valves for an aggressive, race-ready roar on demand.

  • Adjustable Sound: The valvetronic technology offers multiple modes, controlled via a wireless remote or smartphone app, enabling seamless transitions between quiet and loud settings.
  • Performance Benefits: The system is designed to optimize exhaust flow, delivering improved horsepower and torque figures.
  • Materials and Finish: Made from high-quality stainless steel with options for carbon fiber or titanium tips.
  • Installation: While installation is more involved due to the electronic components, professional installers ensure proper integration with the vehicle’s systems.

This exhaust system is ideal for NSX owners who desire versatility in their exhaust sound and want to tailor their driving experience to different environments.

3. Invidia N1 Cat-Back Exhaust

Invidia’s N1 cat-back exhaust is known for delivering a solid blend of performance, sound, and value. It is a popular choice among enthusiasts who want noticeable improvements without breaking the bank.

  • Sound: The N1 generates a sporty, throaty exhaust note that enhances the NSX’s aggressive character without being overbearing.
  • Performance: By reducing backpressure and improving exhaust flow, the system offers modest horsepower and torque gains.
  • Material Quality: Constructed from high-grade stainless steel for durability and resistance to corrosion.
  • Fitment: Designed as a direct bolt-on replacement for the factory exhaust system, facilitating easier installation.

The Invidia N1 exhaust is an excellent starting point for NSX owners seeking an affordable yet effective upgrade.

4. Capristo Carbon Fiber Exhaust System

Capristo is renowned for its premium exhausts featuring distinctive carbon fiber tips and superior craftsmanship. Their NSX exhaust system combines aesthetic appeal with performance improvements.

  • Visual Appeal: The carbon fiber exhaust tips provide a unique, high-end look that complements the NSX’s exotic styling.
  • Sound Character: Produces a crisp, lively exhaust note that enhances the driving experience without excessive drone.
  • Performance: Engineered to improve exhaust flow, resulting in subtle horsepower and torque gains.
  • Materials: Utilizes a combination of stainless steel piping with premium carbon fiber accents for weight savings and durability.

Capristo systems are often chosen by owners who value both style and substance in their exhaust upgrades.

Installation and Maintenance Tips

Aftermarket exhaust installation on the NSX requires attention to detail to maintain performance and reliability. Here are some important tips to ensure a successful upgrade:

  • Professional Installation: Due to the complexity of the NSX’s hybrid system and exhaust routing, entrust installation to certified performance shops familiar with the model.
  • Check for Exhaust Leaks: Post-installation, verify that all connections are sealed properly to prevent leaks that can degrade performance and trigger warning lights.
  • ECU Tuning: Some exhaust upgrades may benefit from or require ECU tuning to optimize engine parameters and fully realize performance gains.
  • Regular Inspection: Periodically inspect the exhaust system for damage, corrosion, or loose fittings, especially if you drive in harsh weather or on salted roads.
  • Emissions Testing: Confirm that your upgraded system passes local emissions and noise tests to avoid legal complications.

Conclusion

Upgrading the exhaust system on your 2019 Acura NSX is an excellent way to personalize and enhance your supercar experience. Whether you seek a richer sound, increased performance, reduced weight, or a more aggressive look, there is an aftermarket exhaust system tailored to meet your needs. The Akrapovič Evolution Line, Armytrix Valvetronic, Invidia N1, and Capristo Carbon Fiber exhausts represent some of the finest options available, each bringing unique advantages to the table.

When selecting an exhaust system, prioritize compatibility with the NSX’s hybrid powertrain and compliance with local regulations. Professional installation and tuning will help safeguard your investment and ensure that your NSX performs at its best. With the right exhaust upgrade, your 2019 Acura NSX will not only sound and look more formidable but also deliver an even more thrilling driving experience.

For further reading and detailed installation guides, consider visiting reputable forums such as the NSX Prime community or consulting with authorized Acura performance specialists.