Hey Subaru enthusiasts! Are you looking to boost the performance and sound of your 2008 Subaru Impreza? Upgrading your exhaust system is a fantastic way to achieve just that. In this article, we'll dive into everything you need to know about finding the perfect exhaust kit for your ride. Let's get started!

Why Upgrade Your 2008 Subaru Impreza Exhaust?

So, why should you even consider swapping out your stock exhaust system? There are several compelling reasons:

• Improved Performance: A performance exhaust kit is designed to reduce backpressure, allowing your engine to breathe easier. This can lead to noticeable gains in horsepower and torque. Who doesn't want more power, right?
• Enhanced Sound: Let's be honest, the stock exhaust on the 2008 Impreza is pretty tame. An aftermarket exhaust can give your Subie that aggressive, sporty rumble you've been craving. Get ready to turn some heads!
• Weight Reduction: Many aftermarket exhaust systems are made from lighter materials like stainless steel or titanium. This can shave off valuable pounds, further improving performance and handling.
• Aesthetic Appeal: A shiny new exhaust system can add a touch of style to the underside of your car. Plus, those exhaust tips can really make a statement.

Types of Exhaust Kits for Your 2008 Impreza

Now that you're convinced an exhaust upgrade is the way to go, let's explore the different types of kits available:

Cat-Back Exhaust Systems

A cat-back system replaces everything from the catalytic converter back to the exhaust tips. This is a popular choice because it offers a good balance of performance, sound, and affordability. Installation is usually straightforward, making it a DIY-friendly project for many enthusiasts.

The advantages of a cat-back system include: moderate performance gains, improved exhaust note, relatively easy installation, and a wide variety of options available.

However, there are also some drawbacks to consider: the performance gains are not as significant as with a full turbo-back system, and the catalytic converter remains stock, which can be a bottleneck in some cases.

Axle-Back Exhaust Systems

An axle-back system is the simplest and most budget-friendly option. It replaces the section of the exhaust system from the rear axle to the exhaust tips. This is primarily a sound upgrade, as it doesn't significantly improve performance.

Pros of an axle-back system are its affordable price, easy installation, and noticeable sound improvement. Cons include minimal performance gains and limited impact on overall exhaust flow.

Turbo-Back Exhaust Systems

A turbo-back system (also known as a full exhaust system) replaces everything from the turbocharger back to the exhaust tips. This includes the downpipe, which is a critical component for maximizing performance on turbocharged vehicles like the Impreza. Turbo-back systems offer the most significant performance gains but are also the most expensive and complex to install.

The benefits of a turbo-back system are maximum performance gains, improved turbo spool-up, and aggressive exhaust note. The downsides are higher cost, more complex installation (often requiring professional help), and potential for increased noise levels.

Factors to Consider When Choosing an Exhaust Kit

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

Sound Level

Sound is a subjective but crucial factor. Do you want a subtle rumble or an aggressive roar? Research different exhaust systems and listen to sound clips online to get an idea of the sound level. Keep in mind that some exhaust systems may be too loud for street use in certain areas, so check your local regulations.

Material

Exhaust systems are typically made from either aluminized steel or stainless steel. Stainless steel is more durable and resistant to rust, making it a worthwhile investment if you live in an area with harsh weather conditions. Aluminized steel is more affordable but may not last as long.

Pipe Diameter

The diameter of the exhaust piping affects exhaust flow and sound. Larger diameter pipes generally offer better performance but can also increase exhaust drone. A good rule of thumb is to stick with a pipe diameter that's appropriate for your engine's horsepower level.

Brand Reputation

Stick with reputable brands that have a proven track record of producing high-quality exhaust systems. Read reviews and ask for recommendations from other Subaru owners.

Budget

Exhaust kits can range in price from a few hundred dollars to over a thousand dollars. Determine your budget beforehand and stick to it. Remember that you may also need to factor in the cost of installation if you're not doing it yourself.

Top Exhaust Kit Brands for the 2008 Subaru Impreza

Here are some of the most popular and trusted brands for Subaru Impreza exhaust systems:

• Invidia: Known for their high-quality construction, performance gains, and aggressive sound.
• Cobb Tuning: Offers a range of exhaust systems designed to work seamlessly with their other performance upgrades.
• Magnaflow: Produces durable and great-sounding exhaust systems for a variety of vehicles, including the Impreza.
• Borla: Renowned for their premium materials, exceptional craftsmanship, and distinctive exhaust notes.
• Nameless Performance: Offers customizable exhaust systems with a focus on performance and sound.

Installation Tips

If you're planning to install the exhaust kit yourself, here are a few tips to make the process smoother:

• Gather the Right Tools: Make sure you have all the necessary tools, including sockets, wrenches, a jack, jack stands, penetrating oil, and a torque wrench.
• Watch Installation Videos: There are plenty of helpful installation videos online that can guide you through the process. YouTube is your friend!
• Use Penetrating Oil: Spray penetrating oil on any rusted bolts or connections to make them easier to remove.
• Follow the Instructions: Carefully read and follow the instructions that come with the exhaust kit.
• Torque to Spec: Use a torque wrench to tighten all bolts to the manufacturer's specifications.

If you're not comfortable installing the exhaust kit yourself, it's best to take it to a professional mechanic. Better safe than sorry!

Maintaining Your New Exhaust System

To keep your exhaust system in good condition and ensure it lasts for years to come, follow these maintenance tips:

• Regular Inspections: Inspect your exhaust system regularly for any signs of damage or corrosion.
• Clean the Exhaust Tips: Keep your exhaust tips clean and polished to maintain their appearance.
• Address Leaks Promptly: If you notice any exhaust leaks, have them repaired immediately.
• Avoid Harsh Chemicals: Don't use harsh chemicals or abrasive cleaners on your exhaust system.

Conclusion

Upgrading your 2008 Subaru Impreza's exhaust system is a great way to improve performance, enhance sound, and add a touch of style to your ride. By considering the different types of exhaust kits available, the factors that influence your choice, and the installation and maintenance tips, you can find the perfect exhaust system to meet your needs and preferences. So go ahead, give your Impreza the exhaust upgrade it deserves!