So, you're thinking about upgrading your Infiniti G35 sedan with a dual exhaust system? Awesome choice, guys! You're about to dive into a world of enhanced performance, a more aggressive sound, and a seriously cool aesthetic. Let's break down everything you need to know to make the right decision and get the most out of your G35.

Why Dual Exhaust for Your G35 Sedan?

First off, let's talk about why a dual exhaust system is such a popular upgrade for the Infiniti G35 sedan. It's not just about looking good (though, let's be honest, that's a big part of it!). A well-designed dual exhaust can seriously boost your car's performance. The stock exhaust systems in many cars, including the G35, are often designed with compromises in mind, balancing performance with noise reduction and cost-effectiveness. This means they can be a bit restrictive, hindering the engine's ability to breathe properly.

A dual exhaust system, on the other hand, is designed to optimize exhaust flow. By providing two separate pathways for exhaust gases to exit the engine, you reduce backpressure. Less backpressure means the engine doesn't have to work as hard to expel exhaust, which translates to more horsepower and torque. You'll likely feel an improvement in throttle response and overall engine efficiency. It's like letting your G35 finally take a deep breath and stretch its legs. Moreover, the sound is a game-changer. The G35 already has a nice engine note, but a dual exhaust can amplify that into a deep, throaty roar that announces your arrival. Just imagine cruising down the street, the sound of your G35's engine resonating with power. It’s an experience that any car enthusiast would appreciate. Beyond performance and sound, a dual exhaust system also adds a touch of visual flair to your G35. The polished tips peeking out from under the rear bumper give your car a sportier and more aggressive look. It’s a subtle but effective way to enhance the overall appearance of your ride, signaling to everyone that this is no ordinary sedan.

Choosing the Right Dual Exhaust System

Okay, so you're sold on the idea of a dual exhaust. Now comes the fun part: picking the right system for your G35. The market is flooded with options, each with its own unique characteristics and price point. It can be overwhelming, but don't worry; we'll walk you through the key considerations.

• Material: Exhaust systems are typically made from either aluminized steel or stainless steel. Aluminized steel is more affordable but prone to rust, especially in areas with harsh weather. Stainless steel is more expensive but offers superior durability and corrosion resistance. If you plan on keeping your G35 for a long time or live in an area with snow and salt, stainless steel is the way to go.
• Piping Diameter: The diameter of the exhaust piping affects exhaust flow and, consequently, performance. A larger diameter generally allows for better flow but can also reduce backpressure too much, which can actually hurt low-end torque. Finding the right balance is crucial. For a G35 sedan, a 2.25-inch to 2.5-inch diameter is usually a good choice.
• Muffler Design: The muffler is responsible for controlling the sound level and tone of your exhaust. Different muffler designs produce different sound characteristics. Chambered mufflers tend to offer a louder, more aggressive sound, while straight-through mufflers provide a smoother, more refined tone. Researching sound clips online is a great way to get a sense of how different mufflers sound.
• Brand Reputation: Stick with reputable brands known for producing high-quality exhaust systems. Brands like Borla, Invidia, and Magnaflow are popular choices among G35 owners. Reading reviews and forums can provide valuable insights into the reliability and performance of different brands.
• Installation: Consider whether you plan to install the exhaust system yourself or have a professional do it. Some exhaust systems are designed for easy bolt-on installation, while others may require welding or modification. If you're not comfortable working on cars, it's best to leave the installation to a professional.
• Budget: Dual exhaust systems can range in price from a few hundred dollars to over a thousand. Determine your budget beforehand and stick to it. Remember, you don't necessarily have to buy the most expensive system to get good performance and sound. Focus on finding a system that meets your needs and fits your budget.

Installation: DIY or Professional?

So, you've got your shiny new dual exhaust system. Now what? The installation process can be straightforward or complex, depending on the system and your mechanical skills. If you're a seasoned DIYer with experience working on cars, you might be able to tackle the installation yourself. However, if you're not comfortable with tools or have limited experience, it's best to leave it to a professional. Here's a quick rundown of what's involved in the installation process:

• Preparation: Gather all the necessary tools, including a socket set, wrenches, a jack, jack stands, and penetrating oil. Read the instructions carefully before you begin. Safety first! Wear safety glasses and gloves to protect yourself.
• Removing the Old Exhaust: Loosen the bolts connecting the old exhaust system to the catalytic converters. Use penetrating oil to help loosen stubborn bolts. Support the exhaust system with jack stands before removing the hangers. Carefully remove the old exhaust system.
• Installing the New Exhaust: Install the new exhaust system in the reverse order of removal. Start by attaching the new exhaust pipes to the catalytic converters. Use new gaskets to ensure a proper seal. Tighten all the bolts to the manufacturer's specifications. Install the muffler and exhaust tips. Adjust the position of the exhaust tips to ensure they are properly aligned.
• Checking for Leaks: Start the engine and listen for any exhaust leaks. If you hear a hissing sound, check the connections and tighten the bolts as needed. A small exhaust leak can significantly reduce performance and fuel economy.

If this sounds daunting, don't sweat it. A professional mechanic can install a dual exhaust system in a few hours. The cost of professional installation typically ranges from $200 to $500, depending on the complexity of the system and the labor rates in your area. While it's an added expense, it's often worth it to ensure the job is done correctly and safely.

The Sound of Power: What to Expect

One of the most exciting aspects of upgrading to a dual exhaust system is the enhanced sound. The Infiniti G35 already has a decent exhaust note, but a dual exhaust can take it to a whole new level. Expect a deeper, more aggressive tone that will turn heads wherever you go. The specific sound characteristics will depend on the muffler design and piping diameter. Some systems produce a loud, throaty roar, while others offer a more refined and subtle tone. Listening to sound clips online can help you get a sense of what to expect.

Keep in mind that a louder exhaust can also attract unwanted attention from law enforcement. Check your local noise ordinances to ensure your exhaust system complies with regulations. Some areas have restrictions on the maximum allowable noise level for vehicles. It's always better to be safe than sorry.

Performance Gains: Feel the Difference

While the enhanced sound is a major draw, the performance gains from a dual exhaust system are equally significant. By reducing backpressure and improving exhaust flow, a dual exhaust can unlock hidden horsepower and torque in your G35's engine. You'll likely notice an improvement in throttle response, acceleration, and overall engine efficiency. The exact amount of performance gain will vary depending on the specific exhaust system and other modifications you've made to your car. However, it's not uncommon to see gains of 10-15 horsepower with a well-designed dual exhaust system.

Maintaining Your Dual Exhaust System

To keep your dual exhaust system performing its best, it's important to perform regular maintenance. Check the exhaust system periodically for leaks, rust, and damage. Tighten any loose bolts or clamps. Clean the exhaust tips regularly to keep them looking shiny and new. If you live in an area with harsh weather, consider applying a rust inhibitor to protect the exhaust system from corrosion. With proper care and maintenance, your dual exhaust system will provide years of reliable performance and enjoyment.

Final Thoughts

Upgrading your Infiniti G35 sedan with a dual exhaust system is a fantastic way to enhance its performance, sound, and appearance. By choosing the right system and taking care of it properly, you can unlock the full potential of your G35 and enjoy a more exhilarating driving experience. So, go ahead and unleash the power within! You won't regret it.