Are Ngm Headers Worth It For The Genesis Coupe 3.8?

If you own a Hyundai Genesis Coupe 3.8 and you’re looking to increase horsepower, one popular modification is adding aftermarket headers. NGM headers are a popular brand for the Genesis Coupe, but are they really worth the cost?

If you’re short on time, here’s the quick answer: NGM headers can add 15-20 horsepower on the Genesis Coupe 3.8, improve throttle response and produce a better exhaust note. However, they are one of the more expensive options and require professional installation.

Stock Headers on the Genesis Coupe 3.8

When it comes to the performance of the Genesis Coupe 3.8, the stock headers play a crucial role in determining the engine’s power output. These headers, which are part of the exhaust system, have certain design limitations that can impact the overall performance of the vehicle.

Design limitations

The stock headers on the Genesis Coupe 3.8 are designed to meet certain criteria, such as cost-effectiveness and compliance with emissions standards. While these headers are adequate for day-to-day driving, they may not be optimized for maximum performance.

The design limitations of the stock headers can limit the engine’s ability to breathe freely, resulting in restricted exhaust flow.

Restricted exhaust flow

Restricted exhaust flow can have a negative impact on the performance of the Genesis Coupe 3.8. When the exhaust gases cannot be efficiently expelled from the engine, it can lead to backpressure, which hampers the engine’s ability to generate power.

This can result in reduced horsepower and torque, as well as diminished throttle response.

Furthermore, restricted exhaust flow can also increase engine temperatures, potentially leading to overheating issues. This can be particularly problematic during high-performance driving or in hot climates.

Power left on the table

By upgrading to aftermarket headers, such as NGM Headers, Genesis Coupe 3.8 owners have the opportunity to unlock additional power and performance from their vehicles. Aftermarket headers are specifically designed to improve exhaust flow, allowing the engine to breathe more efficiently.

This can result in significant gains in horsepower and torque, enhancing the overall driving experience.

According to dyno tests conducted by NGM Headers, their product can provide up to a 15% increase in horsepower and torque compared to the stock headers. These improvements can be particularly noticeable in the mid to high RPM range, where the Genesis Coupe 3.8 engine tends to thrive.

It is important to note that upgrading to aftermarket headers may require additional modifications, such as a retune of the engine’s ECU (Engine Control Unit), to fully optimize the performance gains.

Consulting with a reputable performance shop or a professional tuner is recommended to ensure proper installation and tuning.

Advantages of Aftermarket Headers

Increased exhaust flow

One of the key advantages of aftermarket headers, such as NGM headers for the Genesis Coupe 3.8, is the increased exhaust flow they offer. Stock headers are often designed with restrictive bends and narrow tubing, which can impede the flow of exhaust gases.

Aftermarket headers, on the other hand, are typically engineered with larger and smoother tubing, allowing for improved flow and reduced backpressure. This increased exhaust flow can lead to several performance benefits.

Higher horsepower gains

By improving exhaust flow, aftermarket headers can help to increase horsepower gains. When exhaust gases can flow more freely, the engine can expel them more efficiently, resulting in improved combustion and power output.

While the exact horsepower gains will vary depending on the specific headers and vehicle, it is not uncommon to see noticeable increases in horsepower with aftermarket headers installed. This can provide a significant boost in performance for Genesis Coupe 3.8 owners.

Better throttle response

Another advantage of aftermarket headers is the potential for improved throttle response. When the exhaust system is more efficient, the engine can respond more quickly to throttle inputs, resulting in a more responsive and engaging driving experience.

This can be particularly beneficial for those who enjoy spirited driving or track use, as it allows for quicker acceleration and better control over the vehicle.

Enhanced exhaust note

For many car enthusiasts, the exhaust note is an important aspect of the driving experience. Aftermarket headers can often provide an enhanced and more aggressive exhaust sound, giving the Genesis Coupe 3.8 a deeper and more satisfying tone.

This can add to the overall enjoyment of the vehicle and make it stand out from the crowd.

NGM Headers for the Genesis Coupe 3.8

When it comes to enhancing the performance of your Genesis Coupe 3.8, NGM headers are often a topic of discussion among car enthusiasts. These aftermarket headers are designed to improve the exhaust flow, leading to potential increases in horsepower and torque.

Let’s take a closer look at the key aspects of NGM headers and whether they are worth it for your Genesis Coupe 3.8.

Reputation and Construction Quality

NGM headers have gained a solid reputation in the automotive community for their high-quality construction. They are typically made from durable materials such as stainless steel, which offers excellent resistance against corrosion and heat.

The precision engineering ensures a perfect fitment, allowing for easy installation without any modifications. This attention to detail and commitment to quality make NGM headers a reliable choice for Genesis Coupe 3.8 owners.

Dyno Tested Horsepower Gains

One of the main reasons why car enthusiasts consider NGM headers is the potential increase in horsepower. NGM headers have been dyno tested to demonstrate their performance gains. While the exact horsepower increase may vary depending on factors such as the existing modifications and tune of your Genesis Coupe 3.8, NGM headers have been known to provide noticeable power gains.

These improvements can enhance the overall driving experience, giving you that extra boost of power when you need it.

Improved Torque Curve

Along with horsepower gains, NGM headers also contribute to an improved torque curve. The enhanced exhaust flow allows for better scavenging of exhaust gases, resulting in increased torque across the RPM range.

This means improved acceleration and responsiveness, making your Genesis Coupe 3.8 feel more lively and engaging on the road. Whether you enjoy spirited driving or want that extra power for track days, the improved torque curve offered by NGM headers can make a noticeable difference.

Compatible Exhaust Systems

Another advantage of NGM headers is their compatibility with various aftermarket exhaust systems. This allows you to customize the sound and performance of your Genesis Coupe 3.8 according to your preferences.

Whether you prefer a deep and aggressive tone or a more refined and subtle exhaust note, pairing NGM headers with a compatible exhaust system can help you achieve the desired sound and performance characteristics.

Installation Considerations

Professional installation recommended

When considering installing NGM headers on your Genesis Coupe 3.8, it is highly recommended to have them professionally installed. While some car enthusiasts may be tempted to tackle the installation themselves, it is important to remember that headers are a crucial component of your car’s exhaust system.

Improper installation can lead to leaks, poor performance, and even damage to your engine.

A professional installer will have the experience and expertise to ensure that the headers are installed correctly, minimizing the risk of any issues down the line. Additionally, they will have the necessary tools to handle any challenges that may arise during the installation process.

Tuning required to realize full gains

Installing NGM headers on your Genesis Coupe 3.8 can provide significant performance gains. However, it is important to note that in order to fully realize these gains, tuning is required. The headers will change the airflow dynamics of your exhaust system, and without proper tuning, your car’s engine may not be able to take full advantage of the increased flow.

A professional tuner will be able to optimize your car’s engine management system to work in harmony with the new headers. This will ensure that you get the most out of your investment and enjoy the improved performance that NGM headers can provide.

California CARB compliance

If you live in California or another state with strict emissions regulations, it is important to ensure that the NGM headers you choose are California Air Resources Board (CARB) compliant. CARB-compliant headers are designed to meet the state’s stringent emissions standards, ensuring that your car remains street legal.

Before purchasing NGM headers, check with the manufacturer or retailer to confirm that they are CARB compliant. Installing non-compliant headers can result in fines and may even lead to your vehicle failing emissions tests.

California Air Resources Board (CARB)

Long term reliability

When considering any aftermarket modification for your car, it is important to consider the long term reliability of the product. NGM headers are known for their high quality and durability, but it is still important to take proper care of them to ensure their longevity.

Regular maintenance, such as checking for leaks and ensuring proper tightening of bolts, will help prevent any issues from arising. Additionally, following the manufacturer’s recommended maintenance schedule and guidelines will ensure that your headers continue to perform optimally for years to come.

Cost Analysis

Header prices

When considering whether NGM headers are worth it for the Genesis Coupe 3.8, the cost is an important factor to consider. NGM headers for the Genesis Coupe 3.8 range in price, depending on the specific model and version.

On average, the cost of NGM headers for this vehicle can range from $500 to $1000. It’s important to keep in mind that prices may vary depending on the retailer and any promotions or discounts that may be available.

Additional parts needed

Along with the cost of the headers themselves, it’s important to consider any additional parts that may be needed for the installation. Some common additional parts that may be required include gaskets, bolts, and exhaust system modifications.

These additional parts can add to the overall cost of installing NGM headers on the Genesis Coupe 3.8. It’s recommended to consult with a professional or refer to the manufacturer’s guidelines to determine the specific additional parts needed for your vehicle.

Professional installation costs

While it is possible to install NGM headers on the Genesis Coupe 3.8 yourself if you have the necessary tools and experience, many owners choose to have them professionally installed. Professional installation ensures that the headers are installed correctly and can help prevent any potential issues or damage.

The cost of professional installation can vary depending on the location and the specific shop, but it typically ranges from $200 to $500. It’s important to factor in this additional cost when considering the overall expense of installing NGM headers.

Value compared to other brands

When evaluating the worth of NGM headers for the Genesis Coupe 3.8, it’s important to compare them to other brands in terms of both cost and performance. While NGM headers may be on the higher end of the price spectrum, they are known for their quality and performance.

NGM headers are designed to improve exhaust flow, increase horsepower, and enhance the overall driving experience. Comparing the price and performance of NGM headers to other brands can help determine if they are worth the investment for your Genesis Coupe 3.8.


NGM headers are one of the more popular choices for adding horsepower to the 3.8 liter Genesis Coupe. They can provide gains of 15-20 hp when properly tuned. While they are one of the more expensive options, NGM headers are well-constructed and deliver on their horsepower claims.

If you’re looking to maximize the performance of your Genesis Coupe 3.8, NGM headers are a solid modification to consider. Just make sure to budget for professional installation and tuning to get the most from them.

Sharing is caring!

Similar Posts