So, you're the proud owner of a 2011 Subaru WRX STI Sedan and you're thinking about upgrading that exhaust, huh? Awesome choice! The exhaust system is one of the first mods many car enthusiasts consider, and for good reason. It can seriously transform the sound, performance, and even the look of your ride. But with so many options out there, figuring out the best exhaust for your 2011 STI can feel like navigating a maze. Don't worry, guys, I'm here to help you navigate this landscape and make a choice that'll have you grinning every time you fire up that engine.

Why Upgrade Your 2011 Subaru WRX STI Sedan Exhaust?

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

• Improved Sound: Let's be honest, the stock exhaust on the 2011 STI is a bit... tame. An aftermarket exhaust can unleash the beast within, giving you a deeper, more aggressive sound that'll turn heads wherever you go. Whether you're after a subtle rumble or a full-on roar, there's an exhaust system out there to match your taste.
• Enhanced Performance: A less restrictive exhaust system allows your engine to breathe easier, which can lead to increased horsepower and torque. While the gains might not be massive (unless you're also doing other modifications like a tune), you'll definitely notice a difference in throttle response and overall performance.
• Weight Reduction: Many aftermarket exhaust systems are made from lighter materials like stainless steel or titanium, which can help reduce the overall weight of your car. This can improve handling and acceleration, giving you an edge on the road or track.
• Aesthetics: A shiny new exhaust system can add a touch of visual flair to your car. Whether you opt for a sleek stainless steel finish or a more aggressive titanium look, an aftermarket exhaust can definitely enhance the appearance of your 2011 STI.

Choosing the right exhaust involves balancing these factors to suit your needs and preferences.

Types of Exhaust Systems for Your 2011 STI

Okay, let's get down to the nitty-gritty. When it comes to exhaust systems, you've got a few main categories to choose from:

• Cat-Back Exhaust: This is probably the most common type of exhaust upgrade. A cat-back system replaces everything from the catalytic converter back to the exhaust tips. It's a relatively easy install and offers a good balance of sound, performance, and price. Cat-back systems are a great starting point for most enthusiasts.
• Axle-Back Exhaust: An axle-back exhaust is even simpler than a cat-back, replacing only the section from the rear axle to the exhaust tips. This is usually the most affordable option and is primarily focused on improving sound. Axle-back exhausts are perfect if you're on a budget and just want a more aggressive tone.
• Turbo-Back Exhaust: For the ultimate in performance, a turbo-back exhaust replaces the entire exhaust system from the turbocharger all the way back. This includes the downpipe, which is a critical component for maximizing exhaust flow. Turbo-back systems typically require a tune to take full advantage of the performance gains and avoid potential issues. These are more involved and usually require professional installation.

Each type caters to different needs, balancing cost, complexity, and performance gains. Understanding these differences helps tailor the upgrade to your specific goals.

Top Exhaust System Recommendations for the 2011 Subaru WRX STI Sedan

Alright, let's get into some specific recommendations. Keep in mind that these are just a few suggestions, and there are many other great options out there. Also, remember to check local laws and regulations regarding exhaust noise levels before making your purchase.

Invidia Q300 Cat-Back Exhaust

The Invidia Q300 is a popular choice for STI owners looking for a refined, yet aggressive sound. It features a resonated mid-pipe that helps to reduce drone, making it a great option for daily driving. The Invidia Q300 is known for its high-quality construction and excellent fitment.

• Pros: Excellent sound quality, minimal drone, high-quality construction.
• Cons: May be too quiet for some enthusiasts.

Cobb Tuning Cat-Back Exhaust

Cobb Tuning is a well-respected name in the Subaru world, and their cat-back exhaust for the 2011 STI is a top performer. It's designed to provide a noticeable increase in horsepower and torque, while also delivering a deep, aggressive sound. The Cobb Tuning cat-back is a bit pricier, but the performance gains justify the investment.

• Pros: Significant performance gains, aggressive sound, excellent fit and finish.
• Cons: Higher price point.

ETS Extreme Turbo Systems Turbo-Back Exhaust

If you're looking for maximum performance, the ETS Extreme Turbo Systems turbo-back exhaust is the way to go. This system is designed to provide unrestricted exhaust flow, resulting in significant horsepower and torque gains. The ETS turbo-back is a loud and aggressive system, so it's not for the faint of heart. Be sure to get a proper tune after installation.

• Pros: Maximum performance gains, aggressive sound.
• Cons: Very loud, requires a tune, more expensive.

Remark Axle Back Exhaust

For those on a budget or simply wanting a quick sound upgrade, the Remark Axle Back Exhaust is an excellent choice. It offers an enhanced exhaust note without breaking the bank and is easy to install. The Remark Axle Back provides a noticeable improvement in sound without requiring extensive modifications.

• Pros: Affordable, easy installation, improved sound.
• Cons: Minimal performance gains.

Factors to Consider Before Buying

Before you click that "buy" button, let's cover a few important factors to keep in mind:

• Sound Level: As I mentioned earlier, it's crucial to check local laws and regulations regarding exhaust noise levels. Some areas have strict limits, and you don't want to get a ticket for having a too-loud exhaust. Consider what is acceptable in your area.
• Drone: Drone is that annoying low-frequency hum that can occur at certain RPMs. It can be especially bothersome on long road trips. Read reviews and look for exhaust systems that are specifically designed to minimize drone. Drone can be a deal-breaker for some, so do your research.
• Installation: Some exhaust systems are easier to install than others. If you're not comfortable working on your car, you may want to consider professional installation. Factor in the cost when making your decision. Evaluate your comfort and skill level before deciding on DIY or professional installation.
• Budget: Exhaust systems can range in price from a few hundred dollars to several thousand. Set a budget before you start shopping and stick to it. There are plenty of great options available at different price points. Be realistic about what you can afford and what features are most important to you.
• Tuning Requirements: As mentioned, turbo-back exhausts often require a tune to ensure proper engine performance and avoid potential issues. Factor in the cost of a tune when considering a turbo-back system. A tune is essential for optimal performance and engine health with certain exhaust upgrades.

Installation Tips

So, you've got your new exhaust system, and you're ready to install it. Here are a few tips to make the process go smoothly:

• Gather Your Tools: Make sure you have all the necessary tools before you start. This might include sockets, wrenches, a jack, jack stands, penetrating oil, and a torque wrench. Having the right tools will save you time and frustration.
• Safety First: Always use jack stands when working under your car. Never rely solely on a jack. Safety is paramount when working on any vehicle.
• Penetrating Oil is Your Friend: Spray all the bolts and nuts with penetrating oil a day or two before you plan to do the install. This will make them much easier to remove.
• Take Your Time: Don't rush the installation process. Take your time and double-check your work. Rushing can lead to mistakes and potential problems.
• Torque to Spec: Use a torque wrench to tighten all the bolts and nuts to the manufacturer's specifications. This will ensure that everything is properly secured.

Maintaining Your New Exhaust

Once you've installed your new exhaust system, it's important to take care of it to ensure it lasts for years to come:

• Regular Cleaning: Clean your exhaust tips regularly to remove dirt, grime, and exhaust buildup. This will keep them looking their best.
• Check for Leaks: Periodically check for exhaust leaks. Leaks can reduce performance and fuel economy.
• Inspect for Damage: Inspect your exhaust system for any signs of damage, such as dents, cracks, or rust. Address any issues promptly to prevent further damage.

Conclusion

Upgrading the exhaust on your 2011 Subaru WRX STI Sedan is a fantastic way to improve the sound, performance, and aesthetics of your car. With so many great options available, you're sure to find the perfect exhaust system to match your needs and preferences. Just remember to do your research, consider your budget, and follow these tips to ensure a smooth installation and long-lasting enjoyment. Happy modding, guys, and enjoy that sweet, sweet exhaust note! Remember, whether you prioritize sound, performance, or budget, there's a perfect exhaust system waiting to transform your 2011 STI. Take your time, do your research, and enjoy the process of making your ride truly your own.