2013 Honda Accord Coupe Exhaust: Upgrade Guide

Nov 14, 2025 by Alex Braham 47 views

Hey guys! Thinking about giving your 2013 Honda Accord Coupe a little more oomph? Or maybe the old exhaust is starting to sound like a dying lawnmower? Well, you've come to the right place! Let's dive into everything you need to know about upgrading your 2013 Honda Accord Coupe exhaust system. We'll cover why you might want to upgrade, what to look for in a new system, and some popular options to consider.

Why Upgrade Your 2013 Honda Accord Coupe Exhaust?

Upgrading your 2013 Honda Accord Coupe exhaust isn't just about making your car sound cooler (though that's definitely a perk!). There are several legitimate reasons why you might want to swap out that stock exhaust system. These reasons include performance gains, enhanced sound, improved aesthetics, and increased fuel efficiency. Let's break these reasons down further:

Performance Gains: The factory exhaust systems are often designed with cost and noise reduction in mind, which can restrict exhaust flow. An aftermarket exhaust system, especially a cat-back or axle-back system designed for performance, typically uses larger diameter piping and less restrictive mufflers and resonators. This allows the engine to breathe easier, reducing backpressure and potentially freeing up horsepower and torque. The result? A more responsive and powerful driving experience. Imagine feeling that extra kick when you hit the gas – that's the kind of improvement we're talking about!
Enhanced Sound: Let's be honest, the stock exhaust on most cars is pretty quiet. If you're looking for a more aggressive and sporty sound, an aftermarket exhaust is the way to go. Whether you prefer a deep rumble or a high-pitched growl, there's an exhaust system out there to suit your taste. Just be mindful of noise regulations in your area, as some aftermarket exhausts can be quite loud. A well-chosen exhaust can transform your driving experience by adding an exciting auditory element.
Improved Aesthetics: Many aftermarket exhaust systems feature polished stainless steel tips that add a touch of style to the rear of your car. If you're looking to enhance the overall appearance of your ride, a new exhaust can be a great way to do it. Some exhaust systems even come with different tip options, allowing you to customize the look to your liking. Think of it as adding a sharp-looking pair of shoes to complete your car's outfit!
Increased Fuel Efficiency: While not the primary reason for most people to upgrade their exhaust, some aftermarket systems can slightly improve fuel efficiency. By reducing backpressure, the engine doesn't have to work as hard to expel exhaust gases, which can lead to a small increase in MPG. The gains are usually modest, but every little bit helps, especially with today's gas prices. Consider it a nice little bonus on top of the other benefits!

So, whether you're after more power, a better sound, a sleeker look, or even a slight bump in fuel economy, upgrading your 2013 Honda Accord Coupe exhaust can be a worthwhile investment.

Types of Exhaust Systems for Your Accord Coupe

Alright, so you're convinced that an exhaust upgrade is the way to go. Now, let's talk about the different types of exhaust systems available for your 2013 Honda Accord Coupe. There are generally three main types: axle-back, cat-back, and full exhaust systems. Each type offers different levels of performance, sound enhancement, and installation complexity. Understanding the differences will help you make the best choice for your needs and budget.

Axle-Back Exhaust Systems: An axle-back system is the simplest and most affordable option. It replaces the section of the exhaust system from the rear axle to the exhaust tips. This typically includes the muffler and exhaust tips. Axle-back systems are relatively easy to install, often requiring only basic hand tools. The primary benefit of an axle-back system is improved sound, giving your Accord Coupe a throatier and more aggressive tone. However, performance gains are usually minimal with this type of system, as it doesn't address the restrictive catalytic converter or mid-pipe. If you're mainly after a better sound without breaking the bank, an axle-back system is a great choice.
Cat-Back Exhaust Systems: A cat-back system replaces the exhaust components from the catalytic converter back to the exhaust tips. This typically includes the mid-pipe, muffler, and exhaust tips. Cat-back systems offer a better balance of performance and sound enhancement compared to axle-back systems. By replacing the restrictive mid-pipe with a larger diameter pipe, cat-back systems can improve exhaust flow and potentially increase horsepower and torque. Installation is a bit more involved than an axle-back system but can still be done by a DIYer with some mechanical experience. Cat-back systems provide a noticeable improvement in both sound and performance, making them a popular choice for Accord Coupe owners looking for a well-rounded upgrade.
Full Exhaust Systems: A full exhaust system, also known as a turbo-back or header-back system, replaces the entire exhaust system from the engine to the exhaust tips. This includes the exhaust manifold (or header), catalytic converter, mid-pipe, muffler, and exhaust tips. Full exhaust systems offer the most significant performance gains, as they eliminate all the restrictive components of the factory exhaust system. However, they are also the most expensive and require the most complex installation. Depending on local regulations, replacing the catalytic converter may not be legal for street use. Full exhaust systems are typically installed by professional mechanics. If you're serious about maximizing performance and are willing to invest the time and money, a full exhaust system can transform your Accord Coupe into a true performance machine.

Choosing the right type of exhaust system depends on your goals, budget, and mechanical skill level. Consider what's most important to you – whether it's a simple sound upgrade, a boost in performance, or a complete exhaust overhaul – and choose accordingly.

What to Look for in a 2013 Honda Accord Coupe Exhaust System

Okay, so you know why you want to upgrade and what types of systems are out there. Now, let's get into the nitty-gritty of what to actually look for when choosing an exhaust system for your 2013 Honda Accord Coupe. There are several factors to consider, including material, pipe diameter, sound level, brand reputation, and price. Keep these considerations in mind as you research different options.

Material: Exhaust systems are typically made from either aluminized steel or stainless steel. Aluminized steel is more affordable but is prone to rust, especially in areas with harsh weather conditions. Stainless steel is more durable and resistant to rust, making it a better long-term investment. Look for systems made from high-quality 304 stainless steel for the best combination of durability and performance. While stainless steel systems are more expensive upfront, they will likely outlast aluminized steel systems, saving you money in the long run.
Pipe Diameter: The diameter of the exhaust piping plays a crucial role in exhaust flow. Larger diameter pipes allow for better exhaust flow, which can improve performance. However, going too large can actually hurt performance by reducing exhaust velocity. For a 2013 Honda Accord Coupe, a 2.25-inch to 2.5-inch diameter exhaust pipe is generally a good choice. This size provides a good balance of flow and velocity for optimal performance. Consider the modifications you've already made to your car, or plan to make in the future, when choosing a pipe diameter. If you have a heavily modified engine, you may benefit from a slightly larger diameter pipe.
Sound Level: Exhaust sound is a subjective matter, but it's important to choose a system that meets your personal preferences and complies with local noise regulations. Some exhaust systems are designed to be loud and aggressive, while others are more subtle. Pay attention to the decibel levels of different systems and read reviews to get an idea of how they sound in real-world conditions. You can often find sound clips online that will give you a better sense of the exhaust note. Remember, what sounds great online might be too loud in person, so err on the side of caution if you're unsure.
Brand Reputation: Stick with reputable brands that have a proven track record of producing high-quality exhaust systems. Popular brands like MagnaFlow, Borla, and Flowmaster are known for their performance, durability, and sound quality. Reading reviews and doing your research can help you avoid lesser-known brands that may not live up to their claims. A well-established brand is more likely to offer good customer support and honor their warranty, giving you peace of mind.
Price: Exhaust systems can range in price from a few hundred dollars to over a thousand dollars. Set a budget before you start shopping and stick to it. Keep in mind that the cheapest option isn't always the best option, as it may be made from lower-quality materials or offer inferior performance. Consider the long-term cost of ownership, including potential repairs or replacements, when making your decision. Sometimes, spending a little more upfront for a higher-quality system can save you money in the long run.

By considering these factors, you can narrow down your options and choose an exhaust system that meets your needs and budget.

Popular Exhaust Systems for the 2013 Honda Accord Coupe

Alright, let's get down to some specific recommendations. Based on research and customer feedback, here are a few popular exhaust systems that are known to work well with the 2013 Honda Accord Coupe. These options cover a range of budgets and performance goals, so you should be able to find something that fits your needs.

MagnaFlow Cat-Back Exhaust System: MagnaFlow is a well-respected brand known for its high-quality exhaust systems. Their cat-back system for the 2013 Honda Accord Coupe is a popular choice for those looking for a balance of performance and sound. It features mandrel-bent stainless steel construction, which ensures optimal exhaust flow and durability. The MagnaFlow system delivers a noticeable increase in horsepower and torque, as well as a deep, aggressive exhaust note. It's a great option for those who want to improve their car's performance without being too loud or obnoxious.
Borla Axle-Back Exhaust System: Borla is another top brand in the exhaust industry, known for its innovative designs and high-performance products. Their axle-back system for the 2013 Honda Accord Coupe is a great choice for those who want to improve the sound of their car without making major modifications. It features stainless steel construction and a straight-through muffler design, which delivers a sporty and aggressive exhaust note. The Borla system is also relatively easy to install, making it a good option for DIYers.
Invidia Q300 Cat-Back Exhaust System: The Invidia Q300 is a popular choice among Honda enthusiasts, known for its refined sound and quality construction. This cat-back system features mandrel-bent stainless steel piping and a unique muffler design that reduces drone while providing a sporty exhaust note. The Invidia Q300 offers a noticeable improvement in both sound and performance, making it a great all-around upgrade for your 2013 Honda Accord Coupe. It's a bit more expensive than some other options, but the quality and performance are well worth the investment.

These are just a few of the many exhaust systems available for the 2013 Honda Accord Coupe. Be sure to do your own research and read reviews before making a decision. Consider your budget, performance goals, and sound preferences when choosing an exhaust system.

Installation Tips

So, you've got your new exhaust system – awesome! Now comes the fun part (or maybe not, depending on your mechanical skills): installation. Whether you're tackling the job yourself or having a professional do it, here are a few tips to keep in mind for a smooth installation.

Read the Instructions: This might seem obvious, but it's crucial to read the installation instructions carefully before you start. Familiarize yourself with the steps involved and make sure you have all the necessary tools and equipment. Many exhaust systems come with detailed instructions, but you can also find helpful videos online.
Use the Right Tools: Having the right tools can make the installation process much easier and faster. You'll typically need a socket set, wrenches, a ratchet, and a torque wrench. A penetrating oil like PB Blaster can also be helpful for loosening rusted bolts. Investing in a good set of tools is worth it if you plan on doing more DIY work on your car.
Safety First: Always wear safety glasses and gloves when working on your car. Exhaust systems can get very hot, so make sure the car is completely cool before you start working on it. Use jack stands to support the car securely, and never work under a car that is only supported by a jack.
Loosen Rusted Bolts: If you live in an area with harsh weather conditions, the bolts holding your old exhaust system in place may be rusted. Apply penetrating oil to the bolts and let it soak for a while before attempting to loosen them. If the bolts are still stuck, you may need to use a breaker bar or even a torch to heat them up.
Properly Align the Exhaust System: Once you've installed the new exhaust system, take the time to properly align it. Make sure the exhaust tips are centered and that the system isn't rubbing against any part of the car. Use adjustable hangers or clamps to fine-tune the alignment.

If you're not comfortable installing the exhaust system yourself, it's always best to have a professional do it. A qualified mechanic can ensure that the system is installed correctly and safely. Installation costs can vary, so get quotes from a few different shops before making a decision.

Conclusion

Upgrading your 2013 Honda Accord Coupe exhaust is a fantastic way to enhance your car's performance, sound, and appearance. By understanding the different types of exhaust systems, what to look for when choosing a system, and how to install it properly, you can make an informed decision and enjoy the benefits of a new exhaust. Whether you're after a subtle sound upgrade or a significant performance boost, there's an exhaust system out there that's perfect for your needs. So go ahead, give your Accord Coupe the upgrade it deserves!