Hey guys! If you're looking to upgrade your 2011 Infiniti G37 sedan with a new exhaust system, you've come to the right place. Let's dive into everything you need to know to make the best choice for your ride. A new exhaust system can significantly enhance your G37's performance, sound, and even its appearance. But with so many options out there, it’s crucial to understand what to look for. We will cover everything from the benefits of upgrading your exhaust to the different types available and what to consider when making your selection.

Why Upgrade Your Exhaust System?

Upgrading your exhaust system on a 2011 Infiniti G37 sedan can bring a host of benefits that go beyond just aesthetics. Performance enhancement is a key reason many enthusiasts opt for an aftermarket exhaust. The stock exhaust systems often have restrictions that limit the engine's ability to breathe efficiently. Aftermarket systems, designed with wider diameter piping and less restrictive mufflers, allow exhaust gases to flow more freely. This reduction in backpressure can lead to noticeable gains in horsepower and torque. Imagine feeling that extra oomph when you accelerate! Furthermore, an upgraded exhaust can improve your car's fuel efficiency. When the engine doesn't have to work as hard to expel exhaust gases, it operates more efficiently, potentially saving you money at the pump. Improved fuel economy might not be the primary reason for an upgrade, but it’s certainly a welcome bonus.

Of course, let's not forget about the sound. One of the most compelling reasons to upgrade your exhaust system is to achieve a more aggressive and sporty exhaust note. The stock exhaust on the G37 is relatively quiet, which may not satisfy those who crave a more exhilarating driving experience. Aftermarket exhausts come in various configurations, each designed to produce a unique sound. Some offer a deep, throaty rumble, while others provide a higher-pitched, race-inspired scream. The choice is yours, and it’s all about finding the sound that resonates with your personal taste. Besides the auditory experience, a new exhaust system can also enhance the visual appeal of your G37. Many aftermarket systems feature polished stainless steel or titanium tips that add a touch of style to the rear of your car. A gleaming new exhaust system can make your car stand out from the crowd and give it a more customized look. Whether you're aiming for better performance, a more aggressive sound, or enhanced aesthetics, upgrading your exhaust system is a worthwhile investment for any 2011 Infiniti G37 sedan owner.

Types of Exhaust Systems for Your G37

When it comes to upgrading the exhaust system on your 2011 Infiniti G37 sedan, you'll find there are several types to choose from, each offering its unique set of benefits and characteristics. Understanding these differences is crucial in making the right choice for your specific needs and preferences. The main types of exhaust systems include cat-back systems, axle-back systems, and full exhaust systems. Let's break down each one.

Cat-Back Systems

Cat-back systems are among the most popular choices for G37 owners. These systems replace everything from the catalytic converters back to the exhaust tips. This typically includes the mid-pipe, muffler, and tailpipes. One of the primary advantages of a cat-back system is that it offers a good balance of performance gains, sound improvement, and ease of installation. Because they replace a significant portion of the exhaust system, cat-back systems can noticeably improve exhaust flow, leading to modest increases in horsepower and torque. They also provide a more aggressive exhaust note compared to the stock system, without being excessively loud or obnoxious. Installation is generally straightforward, as these systems are designed to bolt directly onto the factory catalytic converters. This means you usually won't need to do any welding or cutting, making it a DIY-friendly project for many enthusiasts. Brands like Invidia, MagnaFlow, and Borla offer excellent cat-back systems for the G37, each with its unique sound characteristics and performance benefits. When selecting a cat-back system, consider the materials used, the diameter of the piping, and the design of the muffler to ensure it aligns with your goals.

Axle-Back Systems

Axle-back systems are a more budget-friendly option that replaces only the components from the rear axle to the exhaust tips. This typically includes the muffler and tailpipes. While axle-back systems may not offer the same level of performance gains as cat-back systems, they are an excellent choice for those primarily seeking a change in exhaust sound and appearance. Installation is usually very simple, often requiring nothing more than basic hand tools. This makes axle-back systems a great option for beginners who want to dip their toes into the world of exhaust modifications. The primary benefit of an axle-back system is the enhanced exhaust note. You can find axle-back systems that range from mild to aggressive, allowing you to customize the sound of your G37 to your liking. Many aftermarket manufacturers offer axle-back systems with stylish exhaust tips, which can significantly improve the visual appeal of your car's rear end. If you're not overly concerned with squeezing out every last bit of horsepower and are more focused on sound and aesthetics, an axle-back system is a solid choice.

Full Exhaust Systems

For the ultimate performance upgrade, a full exhaust system is the way to go. These systems replace everything from the engine headers all the way to the exhaust tips, including the catalytic converters (or replacing them with high-flow versions). A full exhaust system offers the most significant gains in horsepower and torque, as it eliminates virtually all restrictions in the exhaust flow. However, it's important to note that replacing the catalytic converters may not be street legal in some areas, so be sure to check your local regulations before making this modification. Full exhaust systems are typically more expensive and require more extensive installation, often involving welding and custom fabrication. Because of the increased complexity, professional installation is usually recommended. The sound produced by a full exhaust system is generally the loudest and most aggressive, making it ideal for those who want a truly race-inspired exhaust note. Brands like ARK Performance and Stillen offer high-quality full exhaust systems for the G37, designed to maximize performance and sound. If you're serious about performance and don't mind the extra cost and installation effort, a full exhaust system is the ultimate upgrade for your 2011 Infiniti G37 sedan.

Factors to Consider When Choosing an Exhaust

Choosing the right exhaust system for your 2011 Infiniti G37 sedan involves more than just picking the loudest or the most visually appealing option. Several factors come into play, including sound preference, performance goals, budget, and local regulations. Let's break down each of these considerations to help you make an informed decision.

Sound Preference

The sound of your exhaust is a highly subjective matter. What one person considers music to their ears, another might find obnoxious. Before you make a purchase, take some time to listen to sound clips and videos of different exhaust systems on a G37. Many manufacturers and retailers provide audio samples on their websites, and you can find countless videos on YouTube showcasing various exhaust setups. Consider whether you prefer a deep, throaty rumble, a high-pitched, raspy scream, or something in between. Also, think about the volume level you're comfortable with. Do you want an exhaust that's relatively quiet during normal driving but roars when you put your foot down? Or do you prefer a consistently loud and aggressive sound? Keep in mind that some exhaust systems can drone at certain RPMs, which can become annoying on long drives. Reading reviews and seeking out opinions from other G37 owners can provide valuable insights into the real-world sound characteristics of different exhaust systems. It may be worth attending local car meets or connecting with online communities to hear different systems in person.

Performance Goals

Your performance goals should also play a significant role in your exhaust selection. Are you primarily looking to increase horsepower and torque, or are you more focused on improving throttle response and overall drivability? If you're aiming for maximum power gains, a full exhaust system with high-flow catalytic converters (if legal in your area) is the best option. However, if you're mainly interested in a modest performance bump and improved sound, a cat-back system may be a more practical choice. Consider how you use your G37 on a daily basis. If it's primarily a street car, you may not need the extreme performance of a full exhaust system. On the other hand, if you frequently track your car or participate in competitive events, every bit of horsepower counts. Research dyno tests and performance data for different exhaust systems to get an idea of the potential gains they offer. Keep in mind that the actual performance benefits can vary depending on other modifications you've made to your car, such as air intake, engine tuning, and other components.

Budget

Budget is always a crucial consideration when upgrading your exhaust system. Exhaust systems can range in price from a few hundred dollars for a simple axle-back system to several thousand dollars for a high-end full exhaust system. Determine how much you're willing to spend before you start shopping, and stick to your budget as closely as possible. Keep in mind that the cost of the exhaust system itself is not the only expense you'll incur. You may also need to factor in the cost of installation, especially if you're not comfortable doing it yourself. Professional installation can add several hundred dollars to the total cost, depending on the complexity of the system and the labor rates in your area. Also, consider any additional components you may need, such as new exhaust hangers or gaskets. Don't be afraid to shop around and compare prices from different retailers. You may be able to find discounts or special offers that can help you save money. However, be wary of extremely cheap exhaust systems, as they may be made from low-quality materials and may not provide the same performance or durability as more reputable brands.

Local Regulations

Before you make any modifications to your exhaust system, it's essential to check your local regulations regarding exhaust noise and emissions. Many states and municipalities have laws in place that limit the amount of noise an exhaust system can produce, and some also prohibit the removal or modification of catalytic converters. Violating these regulations can result in fines, and you may even be required to revert your exhaust system back to the stock configuration. Research your local laws and regulations carefully before you purchase an exhaust system. If you're unsure about the legality of a particular system, contact your local Department of Motor Vehicles or a qualified automotive technician for clarification. When in doubt, it's always best to err on the side of caution and choose an exhaust system that is known to be compliant with local regulations. Some manufacturers offer exhaust systems that are specifically designed to meet noise and emissions standards, so look for these options if you're concerned about staying within the law.

By carefully considering these factors, you can choose an exhaust system that not only enhances the performance and sound of your 2011 Infiniti G37 sedan but also aligns with your personal preferences, budget, and local regulations. Happy upgrading!