If you're looking to elevate your Subaru WRX STI's performance and sound, choosing the right exhaust system is key. You'll find that options like the DNA Motoring Cat-Back and BORLA systems not only enhance horsepower but also deliver that aggressive tone you crave. But what should you consider when selecting the best fit for your ride? From construction materials to installation ease, there are several factors that can influence your decision. Let's explore which exhaust systems stand out and why they might be the perfect match for your WRX STI.
Quick Takeaways
- Replacement Muffler Axle Back offers a polished stainless steel construction, producing a deeper tone with minimal low RPM drone for better sound quality.
- DNA MOTORING Cat-Back system increases horsepower by 15-25 units, enhancing low-end torque with an aggressive deep tone during acceleration.
- BORLA Cat-Back Performance system features a sporty sound without drone at cruising speeds and comes with a million-mile warranty for durability.
- Invidia HS15STIGM4SS Exhaust system improves gas flow with a one-piece design, delivering a noticeable horsepower increase and a deep rumble characteristic of Subaru engines.
- All exhaust systems are compatible with 2015-2021 WRX STI models, ensuring proper fitment and performance enhancements tailored for these vehicles.
Replacement Muffler Axle Back for 2015-2021 Subaru WRX STi
For Subaru WRX and WRX STi owners looking to enhance their vehicle's exhaust system, the Replacement Muffler Axle Back for 2015-2021 models stands out as an excellent choice. This polished stainless steel exhaust features 4 double wall blue burnt quad tips, delivering a striking aesthetic while improving performance. Users appreciate its guaranteed fitment and straightforward installation, which typically takes less than two hours. The sound transformation is remarkable, with a deeper tone and reduced idle RPM. Drivers love the pops and gurgles during shifts, adding excitement to their experience. With high ratings for affordability and quality, many recommend this axle-back exhaust as a valuable upgrade for enhancing both sound and style.
Best For: Subaru WRX and WRX STi owners seeking an affordable and effective upgrade to enhance exhaust sound and performance.
Pros:
- Affordable alternative to big-name brands without compromising on quality.
- Easy installation process that can typically be completed in under two hours.
- Produces a deeper and more exciting exhaust note with pops and gurgles during shifts.
Cons:
- Not compatible with aftermarket exhaust systems or SPT mid pipes.
- Some users may find removing old bolts to be the most challenging part of the installation.
- Sound may not be suitable for those seeking an extremely loud exhaust system.
Replacement Muffler Axle Back for 2015-2021 Subaru WRX STi
The Replacement Muffler Axle Back for 2015-2021 Subaru WRX STi stands out as a top choice for enthusiasts seeking to enhance their vehicle's performance and sound. Made from polished stainless steel, this axle-back exhaust features 4 double wall quad tips, ensuring a sleek look. It fits all WRX STi models from 2015 to 2021 and includes everything needed for installation: hangers, gaskets, and hardware. Weighing just 8 pounds, it promises easy installation, typically taking 15-45 minutes. Users appreciate the growling exhaust note, which offers less low RPM drone than stock options. With a customer rating of 4.5 stars, it's well-regarded for quality and performance, allowing the engine to breathe better and producing exciting crackles during downshifts.
Best For: Enthusiasts of the 2015-2021 Subaru WRX STi looking to enhance their vehicle's performance and sound with a high-quality exhaust system.
Pros:
- High-quality polished stainless steel construction providing durability and a sleek appearance.
- Easy installation process, typically taking only 15-45 minutes with included hardware.
- Improved exhaust note with less low RPM drone and exciting crackles during downshifts.
Cons:
- May require minor adjustments around rear cutouts for proper fit.
- Not compatible with aftermarket exhaust systems or SPT mid-pipes.
- Some users report slight contact with the bumper, although it does not cause damage.
DNA MOTORING CBE-WRX15-S Cat Back Exhaust System for 15-17 Subaru WRX & Sti
Designed specifically for the 2015-2017 Subaru WRX and STI, the DNA MOTORING CBE-WRX15-S Cat Back Exhaust System stands out with its high-quality T-304 stainless steel construction and advanced computerized mandrel-bends. This exhaust system dyno-provenly increases horsepower by 15 to 25, while enhancing low-end torque. Its aggressive deep tone improves engine output and efficiency, thanks to larger pipes and low-restriction mufflers that reduce back pressure. Installation is generally straightforward, taking about 20 minutes, though users may need a universal hanger to prevent bumper contact. While most users express satisfaction with the sound quality and performance, some report minor durability issues, such as rattling and flange imperfections. Overall, it's a solid choice for performance enthusiasts.
Best For: Performance enthusiasts looking to enhance the sound and power of their 2015-2017 Subaru WRX or STI.
Pros:
- Aggressive Sound: Produces a deep, rich tone that many users find appealing.
- Performance Boost: Dyno proven to increase horsepower by 15 to 25 and improve low-end torque.
- Ease of Installation: Generally straightforward installation process, typically completed in about 20 minutes.
Cons:
- Durability Issues: Some users report rattling noises and issues with flanges not being perfectly flat.
- Gasket Quality: Included gaskets are considered low quality and may need replacement for better longevity.
- Fitment Concerns: May require a universal hanger to prevent contact with the bumper, and some users reported needing additional hangers.
BORLA Cat-Back Performance Exhaust System for 2015-2021 Subaru Impreza WRX & WRX STI
Offering a perfect blend of performance and sound, the BORLA Cat-Back Performance Exhaust System is an excellent choice for enthusiasts of the 2015-2021 Subaru Impreza WRX and WRX STI. Constructed from T-304 stainless steel, this exhaust system features a dual split rear exit and polished tips, enhancing both aesthetics and performance. Its patented straight-through and multi-core technology delivers a sporty tone during acceleration while ensuring no drone at cruising speeds. Installation is straightforward, taking about 45 minutes, and users report improved throttle response with a pleasant sound profile. The system comes with a million-mile warranty, offering peace of mind, and competitive pricing makes it a smart investment for those looking to elevate their driving experience.
Best For: Enthusiasts of the 2015-2021 Subaru Impreza WRX and WRX STI looking to enhance their vehicle's performance and sound.
Pros:
- Improved throttle response and slight performance gains reported by users.
- No drone guarantee ensures a pleasant sound during regular driving.
- Constructed from durable T-304 stainless steel with a million-mile warranty for long-lasting use.
Cons:
- Some users desire a louder option compared to more aggressive alternatives like Borla's ATAK series.
- Slight fitment adjustments may be needed for optimal installation.
- Installation may require a vehicle lift for ease, which could be a limitation for some users.
Invidia HS15STIGM4SS Exhaust System for 2015+ Subaru WRX/Sti
For enthusiasts looking to enhance their 2015+ Subaru WRX/STi's performance and sound, the Invidia HS15STIGM4SS Exhaust System stands out thanks to its expertly crafted one-piece design. This exhaust system is specifically designed for the WRX/STi Gemini/R400 and features a single-layer quad stainless steel tip alongside a robust 4-inch stainless steel Bell mount. By improving gas flow, it delivers a noticeable horsepower boost over the stock system. Users appreciate the deep rumble characteristic of Subaru engines, though sound levels vary—louder during acceleration and quieter below 2500 RPM. Installation is straightforward, typically taking 1-2 hours, and many recommend replacing factory springs and gaskets for best fit. Overall, the Invidia system garners positive feedback for performance, aesthetics, and value.
Best For: Enthusiasts seeking to enhance the performance and sound of their 2015+ Subaru WRX/STi with a high-quality exhaust system.
Pros:
- Improves gas flow, resulting in a significant horsepower increase over the stock exhaust.
- Produces a deep, pleasant rumble typical of Subaru engines, enhancing the driving experience.
- Easy installation process, typically completed in 1-2 hours, with well-packaged parts.
Cons:
- Some users may experience slight drone and vibrations, indicating a need for sound dampening.
- Sound levels can be loud in the cabin, which may not appeal to all drivers.
- Minor adjustments may be necessary for perfect fitment across different Subaru models.
Factors to Consider When Choosing Exhaust for Subaru WRX STI
When choosing an exhaust for your Subaru WRX STI, you'll want to think about several key factors. Sound quality can greatly affect your driving experience, while installation difficulty may impact your decision if you prefer a DIY approach. Additionally, consider the material and durability, performance enhancements, and compatibility with your specific vehicle model to guarantee you make the best choice.
Sound Quality Considerations
Choosing the right exhaust system for your Subaru WRX STI can greatly enhance your driving experience, especially regarding sound quality. An aftermarket exhaust can deliver deeper tones and improved engine feedback compared to the stock setup. You'll notice distinct acoustic characteristics, like pops and gurgles during shifts, that add to the sportier feel you're after.
When considering sound quality, look for systems designed to minimize low RPM drone while maximizing sound during acceleration. This balance is essential for maintaining comfort during daily driving. The material of the exhaust also plays a role; T-304 stainless steel, for instance, not only offers durability but can also influence the richness of the exhaust note.
Keep in mind that aftermarket installations often change the idle RPM, potentially lowering it from 1800 to around 1000-1500 RPM. This adjustment can greatly enhance the overall sound quality, making your WRX STI feel even more alive. Ultimately, your choice should reflect your desire for a unique auditory experience while ensuring it aligns with your driving habits.
Installation Difficulty Level
Installing an exhaust system on your Subaru WRX STI can be a rewarding project that enhances both performance and sound, but it's important to contemplate the difficulty level involved. The installation time can vary, typically ranging from 30 minutes to 2 hours, depending on the design complexity and the tools at your disposal. You'll usually need wrenches in sizes 9/16 and 5/8, and having WD-40 on hand can be helpful for dealing with rusted bolts.
One of the most challenging aspects is often removing the old bolts, which might take extra time and effort. Additionally, some exhaust systems may require minor adjustments to fit properly, especially around rear cutouts or if universal hangers are needed to prevent contact with the bumper.
Fortunately, many users report that with moderate DIY experience and the right tools, they can tackle installations without professional help. If you're comfortable with basic mechanical tasks, you should find the project manageable and satisfying as you upgrade your WRX STI's performance and sound. Just be prepared to invest some time and effort for the best results!
Material and Durability
After you've tackled the installation, the next step is to contemplate the material and durability of your new exhaust system. Most performance exhausts for the Subaru WRX STI are made from T-304 stainless steel, known for its high corrosion resistance. This material is an excellent choice for longevity, as it's less prone to rust and deterioration compared to mild steel.
When selecting an exhaust system, look for mandrel-bent tubing. This design minimizes restrictions and enhances exhaust flow while maintaining structural integrity. Poorly constructed exhausts can lead to leaks and stress fractures, so pay attention to the quality of the welds; solid, well-welded joints are essential for durability.
Additionally, consider the warranty offered by the manufacturer. A robust warranty—like a "million-mile" guarantee—demonstrates their confidence in the material and construction quality. Investing in a high-quality exhaust system not only boosts performance but also guarantees that you won't have to replace it frequently. By focusing on material and durability, you can make a choice that complements both your driving style and your vehicle's needs.
Performance Enhancements Offered
Upgrading to a performance exhaust system can greatly enhance your Subaru WRX STI's driving experience, making it a worthwhile investment. With the right exhaust, you can expect an increase in horsepower by 15-25 units, along with improved low-end torque. This boost in overall engine output translates to more exhilarating acceleration and responsiveness.
A well-designed exhaust system reduces exhaust back pressure, which allows for smoother gas flow and better engine efficiency. This means you'll notice improved throttle response, giving you a more engaging connection to your vehicle. Plus, many aftermarket exhausts produce a deeper, more aggressive exhaust note that heightens your driving experience without creating excessive cabin noise.
If you're looking for that sporty edge, certain exhaust systems are engineered to deliver desirable sound characteristics, like pops and crackles during gear shifts. This auditory feedback not only adds to your car's appeal but also enhances your connection to the engine's RPM. Overall, a performance exhaust system is an excellent way to elevate both the sound and performance of your Subaru WRX STI, making every drive more enjoyable.
Compatibility With Vehicle Models
Choosing the right exhaust system for your Subaru WRX STI isn't just about performance; compatibility with your specific vehicle model is key. First, make sure to check the model year of your WRX STI, as many exhaust systems are designed for specific years, particularly from 2015 to 2021. If your vehicle has aftermarket components, verify that the new exhaust system will fit properly with those modifications.
Additionally, some exhaust systems are only compatible with certain trims or variations within the WRX STI lineup. It is crucial to examine the detailed specifications provided by the manufacturer to avoid any mismatches.
One critical aspect is the inlet and outlet connection sizes; these must align with your existing exhaust setup for smooth installation and ideal functionality. Many products undergo testing for fitment before shipment, offering some assurance of compatibility with your factory exhaust system.
Common Questions
Will Upgrading My Exhaust System Void My Subaru Warranty?
Upgrading your exhaust system can potentially void your Subaru's warranty, but it doesn't always have to. The Magnuson-Moss Warranty Act protects you, so if the modification isn't directly related to the issue you're claiming under warranty, it shouldn't affect it. However, dealerships often have their own policies, so it's best to check with them first. Always document your upgrades and keep receipts to help defend your warranty rights if needed.
How Much Horsepower Can I Gain From a New Exhaust System?
You're not just adding horsepower; you're releasing a beast! When you upgrade your exhaust system, you can typically gain 5 to 15 horsepower, depending on the system and your vehicle's specifics. This improvement can enhance throttle response and overall performance. Just remember, the actual horsepower gain varies based on factors like engine tuning and other modifications. So, consider your goals and the entire performance package when making your choice!
Is a Louder Exhaust Always Better for Performance?
A louder exhaust isn't always better for performance. While it can indicate increased airflow, which might boost horsepower, it doesn't guarantee peak performance. You'll want to take into account factors like backpressure and engine tuning. A well-designed exhaust system balances sound and efficiency, ensuring you get the most power without sacrificing torque or drivability. So, before you choose a loud system, evaluate how it fits with your overall performance goals.
Do I Need a Tune After Installing a New Exhaust?
If you're swapping out your exhaust, you might wonder if a tune's truly necessary. Typically, tuning's a smart move after installing a new exhaust. It optimizes your engine's performance, ensuring it runs smoothly with the new setup. You're adjusting air-fuel ratios, enhancing horsepower, and maximizing efficiency. Plus, a proper tune can prevent potential problems down the road. So, it's wise to contemplate a tune for that perfect performance boost!
Can I Install an Exhaust System Myself, or Should I Hire a Professional?
You can definitely install an exhaust system yourself if you have some mechanical skills and the right tools. Make certain to follow a reliable guide and take your time. However, if you're unsure or want a perfect fit, hiring a professional might be a better option. They can handle the installation quickly and guarantee everything's done correctly, saving you time and potential headaches down the road. It's all about your confidence and comfort level!
Wrapping Up
When it comes to upgrading your Subaru WRX STI's exhaust system, you're really hitting the nail on the head with any of these top picks. Each option not only boosts performance but also transforms your ride's sound into a thrilling experience. Keep in mind your personal preferences and installation needs, and you'll find the perfect fit. With the right exhaust, you'll be revving up your driving experience in no time.
