Hey Civic Si enthusiasts! Are you looking to boost the performance and sound of your 2013 Honda Civic Si Sedan? Upgrading your exhaust system is one of the most effective ways to achieve that. Whether you're aiming for a more aggressive tone, improved horsepower, or simply a fresh new look, finding the right exhaust can make a significant difference. In this article, we'll dive into everything you need to know about selecting the perfect exhaust system for your ride. Let's get started!

Why Upgrade Your 2013 Civic Si Sedan Exhaust?

Before we jump into specific exhaust systems, let's talk about why you might want to upgrade in the first place. The factory exhaust on the 2013 Civic Si is decent, but it's designed with mass-market appeal in mind, prioritizing quietness and cost-effectiveness over raw performance. Upgrading to an aftermarket exhaust can offer several benefits:

• Increased Horsepower and Torque: Aftermarket exhausts are typically designed to be less restrictive than factory systems. This allows the engine to breathe more freely, which can result in noticeable gains in horsepower and torque, especially in the mid-range and top-end.
• Enhanced Sound: Let's be honest, the sound is a big part of the appeal for many enthusiasts. A new exhaust can give your Civic Si a deeper, more aggressive tone that will turn heads wherever you go. From a subtle growl to a full-on roar, the choice is yours.
• Improved Aesthetics: Many aftermarket exhausts feature polished stainless steel tips and mandrel-bent tubing that look much better than the factory system. It's a simple way to add some visual flair to your car.
• Weight Reduction: Some aftermarket exhausts are made from lighter materials like stainless steel or titanium, which can reduce the overall weight of your car. This can improve handling and acceleration.

Types of Exhaust Systems for the 2013 Civic Si Sedan

Alright, so you're convinced that an exhaust upgrade is the way to go. Now, let's explore the different types of exhaust systems available for your 2013 Civic Si Sedan:

• Cat-Back Systems: A cat-back exhaust replaces everything from the catalytic converter to the exhaust tip. This is a popular choice because it offers a good balance of performance, sound, and affordability. Cat-back systems are generally easy to install and can provide a noticeable improvement in exhaust flow.
• Axle-Back Systems: An axle-back exhaust replaces the components from the rear axle to the exhaust tip. This is a more budget-friendly option that primarily focuses on improving the sound and appearance of your exhaust. While it may not offer as much performance gain as a cat-back system, it's a great choice if you're primarily concerned with aesthetics and sound.
• Header-Back Systems (Full Exhaust Systems): A header-back system replaces the entire exhaust system, including the exhaust manifold (header), catalytic converter, and everything downstream. This is the most comprehensive upgrade and can provide the most significant gains in performance. However, it's also the most expensive and may require professional installation.
• Downpipes: The downpipe connects directly to the turbocharger (if applicable) and is a critical component for improving exhaust flow. Upgrading the downpipe can significantly reduce backpressure and increase horsepower. However, keep in mind that modifying the downpipe may affect emissions compliance.

Factors to Consider When Choosing an Exhaust

Choosing the right exhaust system for your 2013 Civic Si Sedan involves considering several factors to ensure you get the best fit for your needs and preferences. Here’s a detailed breakdown:

• Sound Level and Tone: Sound is subjective, so what sounds good to one person might not appeal to another. Consider the type of sound you're looking for. Do you want a deep, throaty rumble, or a high-pitched, race-inspired scream? Research different exhaust systems and listen to sound clips online to get an idea of their tone. Also, think about the loudness of the exhaust. A very loud exhaust might be fun at first, but it can become annoying on long drives or in residential areas. Make sure the sound level complies with local noise ordinances.
• Performance Gains: While sound is important, performance is often a key factor in upgrading your exhaust. Look for systems that are designed to improve exhaust flow and reduce backpressure. Check dyno charts and customer reviews to see what kind of performance gains you can expect. Keep in mind that the actual gains may vary depending on other modifications you've made to your car.
• Material and Build Quality: The material and build quality of an exhaust system can significantly impact its durability and longevity. Stainless steel is a popular choice because it's resistant to rust and corrosion. Titanium is even lighter and stronger but comes at a higher price. Look for systems with mandrel-bent tubing, which provides smoother exhaust flow compared to crush-bent tubing. Also, check the quality of the welds and flanges.
• Installation: Consider the ease of installation when choosing an exhaust system. Some systems are designed to be direct bolt-on replacements, while others may require modifications or professional installation. If you're comfortable working on cars, you might be able to install a cat-back or axle-back system yourself. However, a full exhaust system or header installation may be best left to a professional.
• Price: Exhaust systems can range in price from a few hundred dollars to several thousand. Set a budget before you start shopping and stick to it. Keep in mind that the cheapest option isn't always the best. Consider the long-term value and quality of the exhaust system.
• Emissions Compliance: This is a big one. Make sure the exhaust system you choose is legal in your state or region. Some exhaust systems may not be compliant with emissions regulations, which could result in fines or failed inspections. Check with the manufacturer or a local mechanic to ensure compliance.

Top Exhaust System Brands for the 2013 Civic Si Sedan

When it comes to aftermarket exhausts, several brands have established a reputation for quality and performance. Here are a few of the top brands to consider for your 2013 Civic Si Sedan:

• Invidia: Invidia is known for producing high-quality exhaust systems with excellent sound and performance. Their Q300 cat-back exhaust is a popular choice for the Civic Si, offering a deep, refined tone without being overly loud.
• Skunk2 Racing: Skunk2 Racing is a well-known brand in the Honda performance world. They offer a range of exhaust systems for the Civic Si, from cat-backs to full exhaust systems. Their exhausts are known for their aggressive sound and performance gains.
• MagnaFlow: MagnaFlow is a popular brand known for its durable and high-performing exhaust systems. They offer a variety of options for the 2013 Civic Si, providing a balance of sound, performance, and value.
• Borla: Borla is renowned for its premium exhaust systems that deliver exceptional sound and performance. While they may be pricier than some other brands, their quality and craftsmanship are top-notch.
• AWE Tuning: AWE Tuning offers sophisticated exhaust systems designed for optimal performance and sound. Their systems are engineered to provide a refined and sporty driving experience.

Installation Tips and Considerations

So, you've picked out your new exhaust system – awesome! Now, let's talk about installation. Here are some tips and considerations to keep in mind:

• Tools: Make sure you have all the necessary tools before you start. This typically includes a socket set, wrench set, penetrating oil, jack stands, and possibly a torque wrench.
• Safety: Always work on your car in a safe environment. Use jack stands to support the car and wear safety glasses to protect your eyes.
• Penetrating Oil: Apply penetrating oil to any rusty bolts or fasteners before attempting to remove them. This can help prevent them from breaking.
• Torque Specs: Use a torque wrench to tighten all bolts and fasteners to the manufacturer's specifications. This will ensure that everything is properly secured.
• Professional Installation: If you're not comfortable installing the exhaust yourself, consider hiring a professional. A qualified mechanic can ensure that the exhaust is installed correctly and safely.

Maintaining Your New Exhaust System

Once you've installed your new exhaust system, it's important to maintain it to keep it looking and performing its best. Here are a few tips:

• Regular Cleaning: Clean your exhaust tips regularly with a metal polish to remove dirt, grime, and oxidation. This will keep them looking shiny and new.
• Check for Leaks: Inspect your exhaust system periodically for leaks. Leaks can cause a loss of performance and can also be dangerous.
• Tighten Connections: Check the connections and fasteners periodically to make sure they are still tight. Vibrations from the engine can cause them to loosen over time.

Conclusion

Upgrading the exhaust system on your 2013 Honda Civic Si Sedan is a fantastic way to enhance its performance, sound, and appearance. By considering factors like sound level, performance gains, material, and installation, you can find the perfect exhaust system to suit your needs. Whether you opt for a cat-back, axle-back, or full exhaust system, the right upgrade can transform your driving experience. So, do your research, choose a reputable brand, and get ready to enjoy the enhanced power and sound of your Civic Si!