So, you're looking to upgrade the exhaust system on your 2019 Subaru Impreza sedan, huh? Awesome choice! Upgrading your exhaust can not only improve your car's performance but also give it a much nicer sound. Let's dive into everything you need to know about exhaust options for your Impreza.

Why Upgrade Your 2019 Impreza's Exhaust?

Before we get into specific products, let's talk about why you might want to upgrade your exhaust in the first place. The factory exhaust systems on most cars, including the 2019 Impreza, are designed with a few key considerations in mind: cost, noise reduction, and emissions control. Automakers often prioritize these factors over maximizing performance. This means there's definitely room for improvement!

Performance Boost: An upgraded exhaust system can reduce backpressure, allowing your engine to breathe more freely. This can result in a noticeable increase in horsepower and torque, especially in the mid-range. You'll feel it when you accelerate!

Enhanced Sound: Let's be honest, the stock exhaust on the Impreza is pretty quiet. A performance exhaust system can give your car a deeper, more aggressive sound. Just be sure to choose an exhaust that isn't too loud if you're worried about annoying your neighbors or attracting unwanted attention from law enforcement.

Aesthetic Appeal: Many aftermarket exhaust systems look much better than the factory exhaust. Polished stainless steel tips can add a touch of style to the rear of your car, making it stand out from the crowd.

Fuel Efficiency (Potentially): While not the primary reason for upgrading, a less restrictive exhaust can sometimes lead to a slight improvement in fuel economy. This is because the engine doesn't have to work as hard to expel exhaust gases.

Types of Exhaust Upgrades for Your 2019 Impreza

Okay, so you're sold on the idea of upgrading. What are your options? Here's a breakdown of the different types of exhaust components you can replace or upgrade on your 2019 Impreza:

Cat-Back Exhaust Systems

A cat-back exhaust system replaces everything from the catalytic converter to the exhaust tip. This is a popular choice for Impreza owners because it's relatively easy to install and provides a good balance of performance, sound, and price. Cat-back systems typically include a new mid-pipe and muffler.

When choosing a cat-back system, consider the following:

• Material: Stainless steel is the most common material for performance exhaust systems. It's durable, rust-resistant, and looks great. Aluminized steel is a cheaper option, but it's not as durable as stainless steel.
• Pipe Diameter: A larger diameter pipe can improve exhaust flow, but going too large can actually hurt performance. A 2.25-inch or 2.5-inch diameter is generally a good choice for a naturally aspirated Impreza.
• Muffler Design: The muffler is what determines the sound of your exhaust. Chambered mufflers tend to be louder and more aggressive, while straight-through mufflers offer better flow with a more mellow tone. Pay attention to decibel level ratings if available.

Installation: Cat-back systems are designed to be a direct fit, utilizing factory mounting points. This simplifies the installation process, making it a DIY-friendly project for those with basic mechanical skills. However, professional installation is always an option.

Axle-Back Exhaust Systems

An axle-back exhaust system is even simpler than a cat-back system. It only replaces the components from the rear axle to the exhaust tip, typically just the muffler. Axle-back systems are usually the most affordable option, and they're very easy to install.

However, axle-back systems offer less performance improvement than cat-back systems since they don't address the mid-pipe. The primary benefit of an axle-back system is improved sound and aesthetics.

Installation Considerations: These are the easiest to install, often requiring only basic tools and minimal mechanical experience. They're perfect for enthusiasts who want a quick and noticeable change in sound and appearance without extensive modifications.

Exhaust Headers (and Downpipes)

Exhaust headers (also called exhaust manifolds) replace the factory headers that connect directly to the engine. Upgrading your headers can significantly improve exhaust flow, resulting in a noticeable increase in power. However, header upgrades are more complex and expensive than cat-back or axle-back systems. Be mindful of emissions regulations in your area; some aftermarket headers may not be street legal.

Downpipes connect the turbocharger (if applicable) to the exhaust system. Upgrading the downpipe can also improve exhaust flow and increase power, especially on turbocharged vehicles. Like headers, downpipe upgrades can be complex and may not be street legal in all areas.

Legal and Environmental Aspects: Replacing or modifying headers and downpipes can affect your vehicle's emissions. It's crucial to ensure that any aftermarket components meet local and federal emissions standards to avoid legal issues.

Performance Mufflers

If you're on a tight budget, you can simply replace the factory muffler with a performance muffler. This is a relatively inexpensive way to improve the sound of your exhaust. However, you won't see as much of a performance gain as you would with a full cat-back system.

Cost-Effectiveness and Considerations: Performance mufflers offer a budget-friendly way to customize your exhaust sound. However, they might not provide the same level of performance enhancement as full exhaust systems. Careful consideration should be given to the type and quality of the muffler to achieve the desired sound.

Top Brands for 2019 Impreza Exhaust Systems

Alright, let's talk brands! There are tons of companies making exhaust systems for the Impreza. Here are a few of the most popular and reputable:

• Invidia: Known for their high-quality stainless steel exhaust systems with aggressive sound.
• Nameless Performance: Offers a variety of exhaust options, including axle-back and cat-back systems, with customizable muffler configurations.
• Borla: A well-known brand with a long history of producing high-performance exhaust systems.
• Magnaflow: Another reputable brand offering a wide range of exhaust options for various vehicles.
• Remark: Offers affordable and stylish exhaust upgrades, particularly known for their axle-back options that enhance the Impreza's sporty sound.

Research and Reviews: Before making a purchase, take time to read reviews and compare different brands and models. This will help you find an exhaust system that matches your preferences for sound, performance, and budget.

Installation: DIY or Professional?

So, you've picked out your new exhaust system. Now what? You have two options: install it yourself or pay a professional to do it.

DIY Installation: If you're mechanically inclined and have some experience working on cars, you can probably install a cat-back or axle-back system yourself. You'll need some basic tools, including a socket set, wrenches, and a jack. Be sure to follow the manufacturer's instructions carefully.

Professional Installation: If you're not comfortable working on your car, or if you're installing headers or a downpipe, it's best to have a professional do the job. A mechanic will have the tools and experience to install the exhaust system correctly and safely.

Safety Measures: Whether DIY or professional, safety should always be a top priority. Ensure the vehicle is properly supported, and always disconnect the battery before starting any work on the exhaust system.

Sound Considerations: How Loud Do You Want To Go?

When selecting an exhaust system, consider the sound level you desire. Louder exhausts may provide a more aggressive tone, but they can also be disruptive in residential areas or during long drives. Check for sound level ratings and consider how the exhaust will sound under various driving conditions.

Local Regulations: Be aware of local noise ordinances, which may restrict the permissible sound levels for vehicles. It's wise to choose an exhaust system that complies with these regulations to avoid potential fines or legal issues.

Cost Factors: Budgeting for Your Exhaust Upgrade

The cost of an exhaust upgrade can vary widely depending on the type of system, brand, and installation method. Axle-back systems are generally the most affordable, while full cat-back systems and header replacements can be more expensive. Set a budget and research options within that range to ensure you get the best value for your money.

Hidden Costs: Don't forget to factor in potential hidden costs, such as installation fees, additional hardware, or modifications that may be needed. Having a clear understanding of all expenses will help you avoid surprises and stay within your budget.

Final Thoughts

Upgrading the exhaust on your 2019 Subaru Impreza sedan can be a rewarding experience. Whether you're looking for more power, a better sound, or just a little more style, there's an exhaust system out there that's perfect for you. Just be sure to do your research, choose a reputable brand, and install the system correctly. Happy motoring, guys!