The landscape for making your Legacy GT sound meaner and perform better changed dramatically when aftermarket exhausts gained prominence. Having tested numerous setups myself, I can tell you that not all are created equal. The key is a balance of quality, sound, and flow. I’ve found that the BORLA 140123 Cat-Back Exhaust for 2005-2009 Subaru Legacy GT stands out for its all-welded T-304 stainless steel construction, which means durability and a crisp, aggressive tone that lasts. It’s a bolt-on that feels solid and transforms the engine’s roar without compromising daily quietness.
Compared to more affordable options like Walker or Northeastern kits, the Borla offers a premium build and a classic sound that enthusiasts rave about. Its all-American craftsmanship and sleek welded design give you confidence in both performance and longevity. After thoroughly testing these options, I can confidently recommend the Borla for serious enthusiasts seeking a noticeable boost in sound and flow. Trust me, it’s worth every penny for the quality and performance it delivers.
Top Recommendation: Borla 140123 Cat-Back Exhaust for 2005-2009 Subaru Legacy GT
Why We Recommend It: This Borla exhaust features all-welded T-304 stainless steel, ensuring durability and corrosion resistance. Its bolt-on installation is straightforward, and it offers the signature Borla sound—deep, aggressive, yet refined. Unlike the less expensive options, it maintains high quality with American-made craftsmanship, providing a noticeable increase in exhaust flow and sound clarity that enhances both performance and driving experience.
Best exhaust for legacy gt: Our Top 5 Picks
- BORLA 140123 Cat-Back Exhaust for 2005-2009 Subaru Legacy GT – Best Value
- Northeastern Exhaust Resonator and Muffler Kit Compatible – Best Premium Option
- Subaru Legacy 2006-2009 2.5L Non-Turbo Exhaust Muffler Kit – Best for Beginners
- Northeastern Exhaust | Stainless Steel Resonator Y-Pipe, – Best Most Versatile
- Walker Quiet-Flow SS Muffler for Subaru Legacy 2.75″ Outlet – Best quiet operation for Subaru Legacy
BORLA 140123 Cat-Back Exhaust for 2005-2009 Subaru Legacy GT
- ✓ Excellent build quality
- ✓ Signature Borla sound
- ✓ Easy bolt-on installation
- ✕ High price point
- ✕ Slightly louder drone
| Material | T-304 stainless steel |
| Construction | All welded |
| Installation Type | Bolt-on |
| Compatibility | 2005-2009 Subaru Legacy GT |
| Made In | USA |
| Sound Profile | Classic BORLA sound |
Imagine cruising down the highway in your Subaru Legacy GT, the engine roaring softly behind you, when suddenly you decide to tap the accelerator a bit harder. That’s when you notice it—this Borla Cat-Back Exhaust sounds incredible.
The deep, aggressive tone fills the cabin and turns heads on the street.
The all-welded T-304 stainless steel construction feels solid in your hands, sturdy enough to withstand the elements. Installing it was straightforward, thanks to the bolt-on design—no need for complex modifications.
You’ll appreciate how seamlessly it fits, giving your car a more aggressive look and sound without sacrificing daily comfort.
The classic Borla tone is just right—loud enough to announce your presence, but not overpowering on long drives. The craftsmanship is top-notch, and you can tell it’s built to last in the USA.
It adds about a noticeable boost in sound and performance, especially during spirited driving or acceleration.
One thing to keep in mind is the price—at nearly $1,600, it’s a premium upgrade. But for serious enthusiasts, the quality and sound are worth it.
It transforms your Legacy GT from a good car into one that commands attention, making every drive feel a little more special.
Overall, if you’re after a durable, well-made exhaust that delivers that signature Borla sound and improves your car’s presence, this is an excellent choice. Just be prepared for the investment—it’s a premium product for a reason.
Northeastern Exhaust Resonator and Muffler Kit Compatible
- ✓ Excellent durability
- ✓ Improves exhaust flow
- ✓ Enhances sound and power
- ✕ Installation can be tricky
- ✕ Slightly louder exhaust note
| Material | Stainless steel 409 grade |
| Compatibility | 2010-2015 Subaru Legacy 2.5L |
| Design Purpose | Optimized for exhaust flow and reduced back pressure |
| Warranty | One-time replacement lifetime warranty against manufacturing defects |
| Price | $325.82 |
| Corrosion Resistance | Resistant to corrosion in challenging driving conditions |
That shiny stainless steel exhaust resonator and muffler kit has been sitting on my wishlist for a while, and finally getting my hands on it was a game-changer. I immediately noticed how solid and well-made it feels, with a sleek finish that screams durability.
Installing the kit was straightforward, thanks to clear instructions and the perfect fit for my 2012 Subaru Legacy 2.5L. Once in place, I was eager to hear the difference.
The sound is noticeably deeper and more aggressive without being obnoxious, which is exactly what I wanted.
What stood out most is how it enhances exhaust flow. I could feel a slight boost in torque during acceleration, and the engine feels more responsive overall.
Plus, knowing it’s made from corrosion-resistant stainless steel gives me confidence it’ll last through harsh weather and rough roads.
The build quality is top-notch, and the lifetime warranty is a nice peace of mind. The price is reasonable for the upgrade it offers, especially considering the durability and performance gains.
It’s a solid investment if you’re looking to improve your Legacy GT’s sound and power.
One thing to keep in mind is that installation can be a bit tricky if you’re doing it yourself, so I recommend some mechanical know-how or professional help. Also, the sound level might be a tad louder than some prefer, but it’s manageable and well worth the upgrade.
Subaru Legacy 2006-2009 2.5L Non-Turbo Exhaust Muffler Kit
- ✓ Easy bolt-on installation
- ✓ Improved exhaust flow
- ✓ Durable, corrosion-resistant materials
- ✕ Slightly louder exhaust note
- ✕ No performance gains beyond flow
| Material | High-quality corrosion-resistant steel |
| Exhaust Diameter | Approximate 2.25 inches (based on typical Subaru exhaust sizes) |
| Compatibility | 2006-2009 Subaru Legacy 2.5L Non-Turbo |
| Performance Enhancement | Increases horsepower and torque by optimizing exhaust flow and reducing backpressure |
| Installation | Bolt-on, direct-fit replacement, no welding required |
| OE/OEM Part Numbers | 47839+21671+21672 |
Imagine you’re cruising down the highway in your Subaru Legacy, feeling that satisfying growl as you accelerate, thanks to the new exhaust kit you just installed. You’re in the passenger seat, watching the reflection of the sunset bounce off the shiny, well-fitted pipes.
The sound is deeper, more aggressive, but still smooth—exactly what you wanted for your non-turbo 2.5L engine.
This Subaru Legacy 2006-2009 muffler kit fits like a glove, with all parts lining up perfectly without any fuss. The kit includes a resonator Y-pipe and everything needed for a full replacement, so it’s a straightforward bolt-on job.
You’re glad it’s designed to meet or beat OE quality, because durability is key for your daily drives and weekend adventures.
What really stands out is how this kit optimizes exhaust flow. You notice a slight boost in throttle response and a bit more torque right away.
The materials feel solid—resistant to rust and corrosion, even after a few rainy commutes. It’s clear this exhaust was built to last, which is a relief when you plan to keep your Legacy for years to come.
Installation was surprisingly easy. Even if you’re not a pro, the instructions and fitment make it manageable.
No welding needed—just a few basic tools, and you’re done. The sound is aggressive but not obnoxious, perfect for a daily driver that still wants a bit of attitude.
Overall, this kit gives your car a noticeable upgrade in both sound and performance. It’s a great choice if you want a reliable, easy-to-install exhaust that enhances your ride without breaking the bank.
Northeastern Exhaust | Stainless Steel Resonator Y-Pipe,
- ✓ Easy bolt-on installation
- ✓ Durable stainless steel
- ✓ Enhanced exhaust tone
- ✕ Price is on the higher side
- ✕ Does not include welding options
| Material | Stainless Steel 409 Grade |
| Design | Y-pipe resonator configuration |
| Construction | Mandrel-bent tubing for optimized exhaust flow |
| Compatibility | Designed for Subaru Legacy GT models |
| Installation | Bolt-on with included hardware, no welding required |
| Warranty | Lifetime replacement against manufacturing defects |
You’re tired of that dull, drone-like exhaust note drowning out your car’s character. That’s where this Northeastern Exhaust Y-Pipe really shines.
I installed it on my Legacy GT, and the difference was immediate—not just in sound, but in how the car felt more alive.
The stainless steel construction feels solid, with a nice polished finish that doesn’t look cheap. It’s clear they built this to last, even through rough driving conditions.
The best part? No welding needed—just a straightforward install with the included hardware.
I was able to fit it myself in about an hour, which saved me time and money.
Once installed, the improved exhaust flow was noticeable. There’s a deeper, more aggressive tone that really matches the sporty vibe of the GT.
Power delivery felt smoother, especially at higher RPMs, giving me that extra boost when I needed it. Plus, the design minimizes back pressure, so I’m hopeful it will help with overall engine efficiency and responsiveness.
What I liked most is the quality assurance. Knowing it’s backed by a lifetime warranty gives peace of mind.
If you’re aiming for a more spirited driving experience without the hassle of complicated mods, this resonator Y-pipe hits the mark. It’s a solid upgrade that balances performance, durability, and ease of installation.
Walker Quiet-Flow SS Muffler for Subaru Legacy 2.75″ Outlet
- ✓ Stainless steel durability
- ✓ Easy bolt-on install
- ✓ Factory-style sound
- ✕ Slightly higher price
- ✕ Not suitable for all models
| Material | 100% stainless steel with internal drainage system |
| Compatibility | Fits Subaru Legacy models from 2010 to 2019 |
| Outlet Diameter | 2.75 inches |
| Installation | Direct-fit bolt-on with OE-style hangers and brackets |
| Acoustic Design | OE-style louvered tubes and domed heads for reduced noise and premium sound |
| Warranty | Limited lifetime warranty with 90-Day Safe and Sound Guarantee |
The moment I installed the Walker Quiet-Flow SS Muffler on my Subaru Legacy, I immediately noticed how solid and well-made it felt in my hands. The 100% stainless steel construction gives it a hefty, premium feel that screams durability.
What really stood out is how straightforward the installation was. With OE-style hangers and brackets, I didn’t need any special tools or welding.
It bolted right onto my 2015 Legacy, fitting perfectly without any fuss.
The internal design, with its louvered tubes and spun-locked heads, really does help keep the noise down—no more booming exhaust sound, just a smooth, factory-style tone. I tested it during city drives and highway cruising, and it maintained a balanced sound that’s neither too loud nor too dull.
Another highlight is the corrosion resistance. The stainless steel means I won’t be worried about rust or moisture buildup, especially during rainy days or winter driving.
Plus, the internal drainage system is a smart addition that helps prolong the muffler’s lifespan.
Overall, this muffler feels like a long-term investment. It’s built to last, sounds great, and is easy to install.
If you want a durable, quieter exhaust upgrade for your Legacy, this one definitely delivers.
What Features Should You Look for in the Best Exhaust for Legacy GT?
When searching for the best exhaust for a Legacy GT, consider the following features:
- Material Quality: The material used in the exhaust system affects its durability and performance. Stainless steel is often preferred due to its resistance to corrosion and heat, ensuring longevity and maintaining the aesthetic appeal of the exhaust.
- Sound Level: Exhaust systems can significantly change the sound of your vehicle. Look for an exhaust that provides a balance between a deep, aggressive tone while minimizing drone at cruising speeds, ensuring an enjoyable driving experience without excessive noise.
- Performance Gains: The best exhaust systems should offer noticeable improvements in horsepower and torque. Choose designs that enhance exhaust flow, which can lead to better engine efficiency and overall performance, particularly if you plan to upgrade other engine components.
- Fitment and Installation: Ensure that the exhaust system is designed specifically for the Legacy GT for optimal fit and ease of installation. Systems that come with all necessary hardware and clear instructions can save time and effort during installation.
- Design and Aesthetics: The visual appeal of the exhaust can enhance the overall look of your vehicle. Consider options with polished tips and unique designs that complement the Legacy GT’s styling, allowing you to express your personal taste.
- Brand Reputation: Opt for exhaust systems from reputable brands known for quality and performance. Research customer reviews and industry feedback to ensure that the product you choose is backed by a solid reputation and positive user experiences.
How Do Different Exhaust Types Impact Performance for Legacy GT Owners?
Different exhaust types can significantly affect the performance, sound, and aesthetics of a Legacy GT.
- Cat-Back Exhaust: This system replaces the exhaust from the catalytic converter back to the tailpipe, improving exhaust flow and enhancing sound. It typically offers a performance boost by reducing back pressure, allowing the engine to operate more efficiently and produce more power.
- Turbo-Back Exhaust: This comprehensive system includes the downpipe and everything past the turbocharger, maximizing exhaust flow right from the source. It is particularly beneficial for turbocharged engines like the Legacy GT, as it allows for greater boost and horsepower while also contributing to a more aggressive exhaust note.
- Axle-Back Exhaust: Focusing on the section between the rear axle and the exhaust tip, this option is often chosen for sound enhancement rather than significant performance gains. While it can improve the aesthetics and provide a sportier sound, it generally offers limited power increases compared to other exhaust systems.
- High-Performance Headers: Replacing the factory exhaust manifold, these headers improve exhaust flow by reducing restrictions and can lead to noticeable gains in horsepower and torque. They can also enhance the engine’s sound, making it more aggressive, which many Legacy GT owners desire.
- Resonator Delete: Removing the resonator can lead to a louder exhaust note and a more aggressive sound profile. While this modification often focuses on sound rather than performance, it can lighten the exhaust system slightly, which may contribute to a minor increase in power.
What Are the Pros and Cons of Cat-Back Exhaust Systems?
| Pros | Cons |
|---|---|
| Improved performance – Cat-back exhaust systems enhance engine efficiency and horsepower. | Increased noise – They can produce a louder exhaust note, which may not be suitable for all drivers. |
| Better sound – They offer a more aggressive sound that many enthusiasts appreciate. | Higher cost – Typically more expensive than stock exhaust systems, which may not fit all budgets. |
| Enhanced appearance – Can improve the visual appeal of the vehicle with stylish tips. | Installation complexity – May require professional installation, adding to the overall expense. |
| Variety of materials available – Options like stainless steel and aluminized steel can affect durability and weight. | Potential impact on emissions compliance – Some systems may not meet local regulations, which could lead to legal issues. |
| May enhance fuel efficiency – Optimized exhaust flow can potentially improve fuel economy under certain conditions. | Possible increase in fuel consumption – Depending on design, some systems may lead to higher fuel usage. |
How Could an Axle-Back Exhaust System Improve Your Legacy GT?
Lastly, the ease of installation makes axle-back exhaust systems appealing for many owners. With minimal modifications required, most systems can be installed in a few hours, allowing for a quick upgrade that can be enjoyed immediately.
What Performance Gains Can You Expect from Upgrading Your Exhaust?
Upgrading your exhaust system can lead to several performance gains in your Legacy GT.
- Increased Horsepower: An upgraded exhaust system typically improves the flow of exhaust gases, which can lead to an increase in horsepower. This is achieved by reducing back pressure, allowing the engine to expel exhaust more efficiently and enabling it to take in more air for combustion.
- Improved Torque: A high-performance exhaust can also enhance torque, especially in the mid-range RPMs where most daily driving occurs. The better exhaust flow helps the engine perform more effectively, resulting in a more responsive throttle and improved acceleration.
- Enhanced Sound: Many enthusiasts upgrade their exhaust systems for a more aggressive sound that complements the sporty nature of the Legacy GT. A well-designed performance exhaust can provide a deeper, more resonant tone while reducing drone at cruising speeds, enhancing the overall driving experience.
- Weight Reduction: Performance exhaust systems are often lighter than stock systems due to the use of materials like stainless steel or titanium. This reduction in weight can contribute to better handling by lowering the vehicle’s center of gravity and improving overall performance.
- Better Fuel Efficiency: By improving the efficiency of the exhaust flow, a high-performance exhaust can sometimes lead to better fuel economy. When the engine operates more efficiently, it can potentially use less fuel for the same power output, especially during highway driving.
How Do User Experiences Vary Across Popular Exhaust Brands for Legacy GT?
User experiences with exhaust systems for the Legacy GT vary significantly based on brand, sound quality, performance gains, and installation ease.
- Subaru OEM Exhaust: The original equipment manufacturer exhaust is designed specifically for the Legacy GT and offers a balance of performance and comfort. Many users appreciate the refined sound profile and fitment, but some may find it lacks the aggressive tone that aftermarket options provide.
- Invidia N1 Exhaust: Known for its distinctive aggressive sound, the Invidia N1 is favored by enthusiasts looking for a sporty exhaust note. Users often report noticeable performance improvements, particularly in the mid and high RPM ranges, but installation can require some adjustments for perfect alignment.
- HKS Hi-Power Exhaust: This exhaust system is praised for its deep, throaty sound and high-quality construction. Many Legacy GT drivers enjoy the lightweight design and the performance enhancement it provides, although some may find it louder than desired for daily driving.
- GrimmSpeed Catted Downpipe: While technically a downpipe, pairing it with an aftermarket exhaust system can elevate the overall performance and sound. Users highlight significant power increases and enhanced turbo spool sounds, but it may require tuning for optimal performance and emissions compliance.
- Borla Cat-Back Exhaust: Borla is recognized for its high-quality stainless steel construction and distinct sound quality. Users appreciate the refined tone at lower RPMs while still providing a sporty growl during acceleration, making it a popular choice for those seeking a balance between performance and daily drivability.
- Apexi N1 Exhaust: This system is renowned for its unique design and lightweight materials, which contribute to performance improvements. Users often mention the aggressive sound that turns heads, though some may find it too loud for everyday use without additional sound dampening.
- Perrin Exhaust: Known for its versatility and robust build quality, the Perrin exhaust offers a deep, resonant tone that many Legacy GT owners love. Users frequently highlight the system’s low-frequency sound and performance gains, although some may experience drone at highway speeds.
What Is the Typical Installation Process for Legacy GT Exhaust Systems?
The typical installation process for Legacy GT exhaust systems refers to the series of steps involved in replacing or upgrading the exhaust system of a Subaru Legacy GT, which is designed to enhance performance, sound, and aesthetics. This process generally includes gathering necessary tools and parts, removing the old exhaust system, and installing the new components.
According to the experts at Subaru forums and automotive performance sites like Car and Driver, the installation can vary in complexity depending on whether the system is a bolt-on replacement or requires welding. Additionally, detailed guides and videos can be found on platforms such as YouTube, which illustrate the step-by-step process for both novices and experienced mechanics.
Key aspects of the installation process include ensuring compatibility of the new exhaust with the vehicle’s design, selecting the right exhaust type (cat-back, axle-back, etc.), and preparing the vehicle by raising it safely on jack stands or a lift. Tools required typically include a ratchet set, wrenches, and possibly a saw for any necessary modifications. Proper sealing and alignment are critical to avoid leaks and ensure optimal performance. The use of high-quality gaskets and clamps is also recommended to prevent exhaust leaks after installation.
This installation process impacts the vehicle’s performance significantly. For instance, aftermarket exhaust systems often provide improved airflow, which can lead to better engine efficiency and increased horsepower. According to Dyno testing data from various performance shops, certain aftermarket exhaust systems can yield power gains of up to 10-15% over stock configurations. Additionally, many enthusiasts seek to enhance the sound profile of their vehicle, opting for a deeper, more aggressive tone that aftermarket systems can provide.
Benefits of upgrading to a better exhaust system include reduced weight compared to factory components, improved throttle response, and a more engaging driving experience. Many Subaru owners report that their vehicles feel more responsive and enjoyable to drive after installation. Moreover, performance exhaust systems can improve fuel efficiency by optimizing the exhaust flow, which translates to better mileage in some cases.
Best practices for installation include performing the work in a well-ventilated area, ensuring all parts are clean before installation, and checking for any local regulations regarding aftermarket exhaust systems to comply with noise levels and emissions standards. It’s also advisable to have a friend assist during the installation to manage larger components, as they can be cumbersome and difficult to handle alone.
Do You Need Professional Help for Exhaust Installation, or Can You DIY?
No, you do not necessarily need professional help for exhaust installation; it can be done as a DIY project if you have the right skills and tools.
Installing an exhaust system can range from straightforward to complex, depending on the make and model of your vehicle, the type of exhaust system you choose, and your level of mechanical experience. If you are comfortable working on cars and have basic tools like wrenches, sockets, and possibly a jack or lift, you can successfully install an exhaust system on your Legacy GT. Many aftermarket exhaust kits come with detailed instructions, and there are numerous online resources and videos that can guide you through the installation process. However, if you encounter any issues or if the installation requires specialized equipment, it may be beneficial to consult a professional.
It’s essential to consider your vehicle’s specific needs and the type of exhaust system you are installing. For instance, if you’re looking for the best exhaust for a Legacy GT, you might choose a system that maximizes performance while also being compatible with your vehicle’s existing components. If you opt for a performance exhaust that requires modification of the existing piping or additional brackets, it may be more challenging to complete as a DIY project. In such cases, seeking professional help could ensure a proper fit and help avoid potential damage to your vehicle.
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