Hey guys! Are you looking to boost the performance and sound of your 2008 Subaru Impreza? You've come to the right place! Upgrading your exhaust system is one of the most effective ways to achieve both. Let's dive into the world of 2008 Subaru Impreza exhaust kits and explore what options are available to you.

Why Upgrade Your 2008 Subaru Impreza Exhaust?

Before we get into specific kits, let's talk about why you might want to upgrade your exhaust system in the first place. There are several compelling reasons:

• Performance Boost: A less restrictive exhaust system allows your engine to breathe easier, leading to increased horsepower and torque. The stock exhaust systems often prioritize noise reduction and cost-effectiveness over optimal flow. Aftermarket kits, especially those with larger diameter piping and high-flow mufflers, can significantly reduce backpressure, which hinders engine performance. This is because the engine doesn't have to work as hard to expel exhaust gases, freeing up power that would otherwise be wasted. This improvement is particularly noticeable in the mid-range and high-end of the RPM band, making your Impreza feel more responsive and powerful during acceleration and spirited driving.
• Improved Sound: Let's be honest, the stock exhaust on the 2008 Impreza is pretty tame. An aftermarket exhaust can give your car a much more aggressive and sporty sound. From a deep rumble to a more pronounced growl, the sound improvement alone can drastically enhance the driving experience. When selecting an exhaust system, consider the tone and volume that suit your personal preferences. Some systems offer a subtle increase in sound, while others provide a more pronounced and aggressive exhaust note. Listening to sound clips online can help you make an informed decision before purchasing. A well-chosen exhaust system not only sounds great but also adds to the overall character and appeal of your Impreza.
• Aesthetic Appeal: Many aftermarket exhaust kits come with polished tips that can enhance the look of your Impreza's rear end. A shiny new exhaust tip peeking out from under the bumper can add a touch of style and sportiness to your ride. The visual upgrade can be subtle yet effective, complementing other modifications and enhancing the overall appearance of the car. When selecting an exhaust kit, consider the design and finish of the exhaust tips to ensure they match your aesthetic preferences. Some kits offer a variety of tip styles, including single, dual, and quad configurations, as well as different finishes such as polished stainless steel, black chrome, and titanium. Choosing the right exhaust tip can make a significant difference in the overall look of your Impreza's rear end.
• Weight Reduction: Some aftermarket exhaust systems are made from lighter materials like stainless steel or titanium, which can reduce the overall weight of your car. While the weight savings might not be huge, every little bit helps, especially when it comes to performance. Reducing weight improves the car's handling, acceleration, and braking performance. Lighter exhaust systems also contribute to better fuel economy, albeit marginally. For enthusiasts who are focused on maximizing performance, weight reduction is a crucial aspect of vehicle modification. By replacing heavier components with lighter alternatives, you can improve the overall responsiveness and agility of your Impreza. Stainless steel and titanium exhaust systems offer a significant weight advantage over the stock system, making them a popular choice among performance-minded owners.

Types of 2008 Subaru Impreza Exhaust Kits

Okay, so you're convinced you want a new exhaust. Now, let's explore the different types of kits available for your 2008 Impreza:

• Cat-Back Systems: A cat-back system replaces everything from the catalytic converter back to the exhaust tips. This is a popular choice because it's relatively easy to install and offers a good balance of performance and sound improvement. Cat-back systems typically include a mid-pipe, muffler, and exhaust tips. The mid-pipe connects the catalytic converter to the muffler, while the muffler is responsible for controlling the sound level and tone of the exhaust. The exhaust tips add a visual upgrade to the rear of the car. When choosing a cat-back system, consider the diameter of the piping, the design of the muffler, and the style of the exhaust tips to ensure it meets your performance and aesthetic requirements. Cat-back systems are a great option for those looking to improve the sound and performance of their Impreza without making major modifications to the exhaust system.
• Axle-Back Systems: An axle-back system replaces only the muffler and exhaust tips, from the rear axle back. This is the most budget-friendly option and primarily focuses on improving the sound. Axle-back systems are typically the easiest to install, often requiring only basic hand tools. They offer a quick and simple way to enhance the exhaust note of your Impreza without significantly affecting performance. While axle-back systems may not provide the same power gains as cat-back systems, they can still deliver a noticeable improvement in sound quality. When selecting an axle-back system, pay attention to the design of the muffler and the style of the exhaust tips to ensure it matches your preferences. Axle-back systems are a popular choice for those who want to upgrade the sound of their Impreza without breaking the bank.
• Turbo-Back Systems: (For WRX/STI models) A turbo-back system replaces everything from the turbocharger back, including the downpipe. This is the most performance-oriented option, as it eliminates the restrictive factory downpipe. However, it's also the most expensive and may require professional installation. Turbo-back systems typically include a downpipe, mid-pipe, muffler, and exhaust tips. The downpipe is the most critical component, as it directly affects the flow of exhaust gases from the turbocharger. Replacing the restrictive factory downpipe with a high-flow aftermarket version can significantly improve turbocharger spool-up and overall engine performance. However, installing a turbo-back system may require modifications to the engine management system to optimize performance and prevent potential issues. Turbo-back systems are the ultimate choice for those seeking maximum power gains from their WRX or STI.
• Header-Back Systems: A header-back system replaces everything from the exhaust manifold (headers) back. These are less common than the other options, but offer enhanced performance gains. Header-back systems typically include headers, a downpipe (if applicable), a mid-pipe, a muffler, and exhaust tips. Replacing the factory headers with aftermarket versions can improve exhaust flow and increase horsepower and torque. However, installing a header-back system can be more complex and may require professional installation. It's essential to ensure that the headers are compatible with your specific Impreza model and that any necessary modifications are made to the engine management system. Header-back systems are a great option for those who want to maximize the performance of their Impreza's exhaust system.

Factors to Consider When Choosing an Exhaust Kit

With so many options available, choosing the right exhaust kit for your 2008 Impreza can feel overwhelming. Here are some key factors to keep in mind:

• Budget: Exhaust kits can range in price from a few hundred dollars to over a thousand. Determine how much you're willing to spend before you start shopping. Your budget will help narrow down your options and ensure that you don't overspend on an exhaust system. Consider the long-term benefits of investing in a high-quality exhaust kit, such as improved performance and durability. It's often better to spend a little more upfront for a system that will last longer and provide better results. Don't forget to factor in the cost of installation if you're not planning to do it yourself. Professional installation can add to the overall cost, but it can also ensure that the exhaust system is installed correctly and safely.
• Sound Level: Do you want a subtle increase in sound, or are you looking for something loud and aggressive? Research the sound levels of different kits before you buy. Consider the impact of the exhaust sound on your daily driving experience. A loud and aggressive exhaust may be exciting at first, but it can become tiresome on long trips or in residential areas. Listen to sound clips online to get an idea of the exhaust note of different systems. Some manufacturers provide decibel readings for their exhaust kits, which can help you compare the sound levels of different options. Choose an exhaust system that provides the sound level that you find enjoyable and appropriate for your driving style and environment.
• Performance Goals: Are you primarily looking for a performance boost, or are you more interested in improving the sound and appearance of your car? Choose a kit that aligns with your performance goals. If you're primarily interested in increasing horsepower and torque, focus on kits with larger diameter piping and high-flow mufflers. These systems are designed to reduce backpressure and improve exhaust flow, resulting in noticeable performance gains. If you're more interested in improving the sound and appearance of your car, an axle-back system may be sufficient. Axle-back systems offer a simple and affordable way to enhance the exhaust note of your Impreza without significantly affecting performance. Consider the overall performance of your engine and choose an exhaust system that complements your existing modifications. A well-matched exhaust system can optimize the performance of your engine and enhance the overall driving experience.
• Installation: Are you comfortable installing the exhaust kit yourself, or will you need to take it to a professional? Factor in the cost of installation when making your decision. Installing an exhaust kit can range from a simple bolt-on procedure to a more complex task requiring specialized tools and skills. If you're not comfortable working on cars, it's best to leave the installation to a professional. Professional installation can ensure that the exhaust system is installed correctly and safely, preventing potential problems down the road. Consider the time and effort required for installation when making your decision. If you're short on time or don't have the necessary tools, professional installation may be the best option. Factor in the cost of installation when comparing different exhaust kits to get an accurate estimate of the total cost.
• Emissions Regulations: Make sure the exhaust kit you choose is legal in your state. Some aftermarket exhaust systems may not meet emissions standards, which could result in fines or prevent you from passing inspection. Check your local emissions regulations before purchasing an exhaust kit to ensure that it complies with the law. Some exhaust systems are designed to be emissions-legal, while others may require modifications or exemptions. It's essential to choose an exhaust system that meets the emissions standards in your area to avoid potential legal issues. Consider the environmental impact of your exhaust system and choose one that minimizes emissions while still providing the performance and sound that you desire.

Popular 2008 Subaru Impreza Exhaust Kit Brands

Here are a few popular brands known for producing quality exhaust kits for the 2008 Subaru Impreza:

• Invidia: Invidia is a well-known brand that offers a variety of exhaust systems for the Impreza, known for their quality and performance. Invidia exhaust systems are designed to improve exhaust flow and increase horsepower and torque. They offer a range of options, including cat-back and turbo-back systems, to suit different performance goals and budgets. Invidia exhaust systems are also known for their aggressive sound and stylish appearance. They use high-quality materials and construction techniques to ensure durability and longevity. Invidia is a popular choice among Impreza owners who are looking for a reliable and high-performing exhaust system.
• Borla: Borla is another reputable brand that produces high-quality exhaust systems with a focus on sound and performance. Borla exhaust systems are designed to provide a noticeable improvement in sound quality without being overly loud or obnoxious. They offer a range of options, including cat-back and axle-back systems, to suit different preferences and budgets. Borla exhaust systems are also known for their durable construction and corrosion resistance. They use high-quality stainless steel and advanced manufacturing techniques to ensure that their exhaust systems will last for years to come. Borla is a popular choice among Impreza owners who are looking for a refined and high-quality exhaust system.
• Magnaflow: Magnaflow offers a range of exhaust systems for the Impreza, known for their balance of performance, sound, and affordability. Magnaflow exhaust systems are designed to provide a noticeable improvement in exhaust flow and sound quality without breaking the bank. They offer a range of options, including cat-back and axle-back systems, to suit different budgets and performance goals. Magnaflow exhaust systems are also known for their durable construction and easy installation. They use high-quality materials and a simple bolt-on design to ensure that their exhaust systems are easy to install and will last for years to come. Magnaflow is a popular choice among Impreza owners who are looking for a budget-friendly and reliable exhaust system.

Where to Buy Your 2008 Subaru Impreza Exhaust Kit

You can find exhaust kits for your 2008 Impreza at various online retailers, local auto parts stores, and performance shops. Be sure to compare prices and read reviews before making a purchase. Here are a few places to start your search:

• Online Retailers: Websites like Amazon, eBay, and Summit Racing offer a wide selection of exhaust kits from various brands. Online retailers often have competitive prices and a large inventory to choose from. Be sure to read reviews and compare prices before making a purchase. Online retailers also offer the convenience of shopping from home and having the exhaust kit delivered directly to your door.
• Local Auto Parts Stores: AutoZone, Advance Auto Parts, and O'Reilly Auto Parts are examples of local auto parts stores that may carry exhaust kits for your 2008 Impreza. Local auto parts stores offer the advantage of being able to see the exhaust kit in person before making a purchase. They also have knowledgeable staff who can answer your questions and provide advice. However, local auto parts stores may have a limited selection and higher prices compared to online retailers.
• Performance Shops: Local performance shops specialize in aftermarket parts and accessories for cars. They often have a wide selection of exhaust kits and can provide expert advice on which kit is best for your needs. Performance shops also offer installation services, which can be helpful if you're not comfortable installing the exhaust kit yourself. However, performance shops may have higher prices compared to online retailers and local auto parts stores.

Final Thoughts

Upgrading your 2008 Subaru Impreza's exhaust system is a fantastic way to enhance its performance, sound, and appearance. By carefully considering your budget, performance goals, and desired sound level, you can find the perfect exhaust kit to suit your needs. Happy modding!