2011 Subaru WRX STI Sedan: Choosing The Best Exhaust

by Alex Braham 53 views

So, you're looking to upgrade the exhaust on your 2011 Subaru WRX STI sedan, huh? Awesome! You're in for a treat. Swapping out the exhaust system can seriously transform your driving experience. We're talking about enhanced performance, a more aggressive sound, and even a visual upgrade that'll turn heads. But with so many options on the market, it's easy to get overwhelmed. Don't worry; we're here to guide you through the maze and help you pick the perfect exhaust system for your ride. Let's dive into the world of aftermarket exhausts and find the best fit for your 2011 WRX STI sedan.

Why Upgrade Your Exhaust?

Before we get into specific recommendations, let's quickly cover why you might want to upgrade your exhaust in the first place. The factory exhaust systems are often designed with cost and noise reduction in mind, which means they can be a bit restrictive. Upgrading to an aftermarket exhaust can unlock some serious benefits:

  • Improved Performance: A less restrictive exhaust system allows the engine to breathe easier, which can lead to horsepower and torque gains. More efficient exhaust flow means your engine doesn't have to work as hard to expel exhaust gases, resulting in more power available to the wheels. This is especially noticeable in the mid-range and top-end of the RPM range.
  • Enhanced Sound: Let's be honest, who doesn't want their WRX STI to sound meaner? An aftermarket exhaust can give your car a deeper, more aggressive exhaust note that will make you smile every time you start it up. From a subtle rumble to a full-on roar, the sound options are vast.
  • Weight Reduction: Many aftermarket exhaust systems 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.
  • Aesthetics: A shiny new exhaust system can add a touch of visual flair to the rear of your car. Many systems come with polished tips or unique designs that can set your car apart from the crowd.

Key Considerations Before You Buy

Alright, before you go clicking that "buy now" button, let's talk about some important factors to consider. After all, the best exhaust system is the one that perfectly matches your needs and preferences. These are some of the questions you need to ask yourself.

  • Budget: Exhaust systems can range from a few hundred dollars to over a thousand, so it's important to set a budget before you start shopping. Consider the long-term value and how the exhaust system aligns with your overall performance goals.
  • Sound Level: Do you want a subtle increase in sound, or do you want to wake up the neighborhood every morning? Think about your daily driving habits and what kind of sound you can live with.
  • Material: Stainless steel is a popular choice for its durability and corrosion resistance, while titanium is lighter but more expensive. Aluminized steel is a budget-friendly option but may not last as long.
  • Fitment: Make sure the exhaust system is specifically designed for your 2011 WRX STI sedan. A universal exhaust might require modifications to fit properly.
  • Emissions: Be aware of local emissions regulations. Some aftermarket exhaust systems may not be legal in certain areas.

Top Exhaust System Recommendations for Your 2011 WRX STI Sedan

Okay, let's get to the good stuff! Here are some of the top exhaust system recommendations for your 2011 Subaru WRX STI sedan, covering a range of budgets and preferences:

Cat-Back Exhaust Systems

A cat-back exhaust replaces everything from the catalytic converter back to the exhaust tips. This is a popular choice for those looking for a balance of performance, sound, and affordability.

  • Invidia Q300: This is a fantastic option for those who want a refined sound without being too obnoxious. It offers a noticeable increase in exhaust note without excessive drone, making it suitable for daily driving. The Q300 is known for its high-quality construction and excellent fitment. Performance gains are moderate but noticeable, particularly in the mid-range. The Invidia Q300 is made with high quality materials ensuring that it will last for years to come.
  • Nameless Performance Axleback: If you're on a budget and want a quick and easy upgrade, an axle-back exhaust is a great choice. Nameless Performance offers a variety of axle-back options with different muffler sizes, allowing you to customize the sound to your liking. Keep in mind that axle-backs primarily affect sound and aesthetics, with minimal performance gains. This can be installed at home with basic hand tools in an afternoon.
  • COBB Tuning Cat-Back Exhaust: COBB is a well-respected name in the Subaru community, and their cat-back exhaust is a top-tier option. It's designed to maximize performance and sound, with a focus on minimizing drone. The COBB system is made from high-quality stainless steel and features a resonated mid-pipe to keep the sound levels in check. This is a pricier option, but you are paying for quality.

Turbo-Back Exhaust Systems

A turbo-back exhaust replaces everything from the turbocharger back, including the downpipe. This is the most comprehensive exhaust upgrade and can result in significant performance gains.

  • Invidia Downpipe + Cat-Back: If you're serious about performance, combining an Invidia downpipe with a cat-back exhaust is a great way to go. The downpipe replaces the restrictive factory downpipe, allowing for much better exhaust flow. Just be aware that replacing the downpipe may require a tune to optimize performance and prevent potential issues. This will greatly improve the horsepower numbers you see on the dyno.
  • GrimmSpeed Downpipe + Cat-Back: GrimmSpeed is another reputable brand in the Subaru world, and their downpipe and cat-back combo is designed for maximum performance. The GrimmSpeed downpipe features a high-flow catalytic converter for emissions compliance, while the cat-back offers an aggressive sound and improved flow. When you purchase from GrimmSpeed, you know that you're getting top of the line quality.

Sound Level Considerations

Let's talk about sound. Everyone has different preferences. It is important to consider where you live and who your neighbors are when deciding on an exhaust. Here's a quick guide:

  • Mild: If you want a subtle increase in sound, look for exhaust systems with resonators and mufflers. These will help to dampen the sound and minimize drone.
  • Moderate: A cat-back exhaust with a single muffler or a smaller resonator will provide a noticeable increase in sound without being too overwhelming.
  • Aggressive: If you want a loud and aggressive sound, consider a turbo-back exhaust with a straight-through design or minimal muffling. Be prepared for some drone at highway speeds.

Installation Tips

Installing an exhaust system can be a fun DIY project, but it's important to do it right. Here are a few tips:

  • Use the Right Tools: Make sure you have the necessary tools, including wrenches, sockets, a jack, and jack stands. A penetrating oil like PB Blaster can be helpful for loosening stubborn bolts.
  • Follow the Instructions: Always follow the manufacturer's instructions carefully. If you're not comfortable doing the installation yourself, consider hiring a professional.
  • Check for Leaks: After the installation, start the car and check for exhaust leaks. Tighten any loose connections as needed.

Maintaining Your New Exhaust

Once you've installed your new exhaust, it's important to take care of it to ensure it lasts for years to come. Here are a few tips:

  • Regular Cleaning: Clean your exhaust tips regularly with a metal polish to keep them looking shiny.
  • Inspect for Damage: Periodically inspect your exhaust system for any signs of damage, such as rust or cracks. Address any issues promptly to prevent them from getting worse.
  • Tighten Connections: Check the exhaust connections periodically to make sure they are still tight. Vibrations from the engine can cause them to loosen over time.

Conclusion

Upgrading the exhaust on your 2011 Subaru WRX STI sedan is a fantastic way to improve performance, sound, and aesthetics. With so many options available, it's important to do your research and choose a system that fits your needs and preferences. Whether you're looking for a subtle increase in sound or a full-blown performance upgrade, there's an exhaust system out there for you. So go ahead, take the plunge, and unleash the true potential of your WRX STI! You won't regret it. Remember to consider your budget, sound preferences, and local emissions regulations when making your decision. And don't forget to follow the installation instructions carefully to ensure a proper fit. Happy driving, guys!