Ever heard that deep, satisfying rumble a Subaru WRX makes? That’s the sound of pure performance, and a huge part of it comes from the exhaust system. But when it’s time to upgrade your WRX’s “cat-back” exhaust, the choices can feel overwhelming. You want that aggressive growl and maybe a little more pep, but sifting through all the brands and styles can leave you scratching your head.
Choosing the right cat-back exhaust isn’t just about making your WRX sound cool. It’s about finding a balance between a thrilling sound, a boost in performance, and making sure it fits your budget and driving style. You might be worried about making the wrong choice, spending money on something that doesn’t sound right, or even dealing with annoying drone. This guide is here to help you cut through the confusion.
By the time you finish reading, you’ll have a much clearer idea of what makes a great cat-back exhaust for your WRX. We’ll break down the different types, what to listen for, and what features truly matter. So, get ready to transform your WRX’s soundtrack and unlock its full potential. Let’s dive into the world of WRX cat-back exhausts!
Our Top 5 Cat Back Exhaust Wrx Recommendations at a Glance
Top 5 Cat Back Exhaust Wrx Detailed Reviews
1. PHILTOP Cat-Back System
Rating: 8.7/10
Upgrade your ride with the PHILTOP Cat-Back System, a stainless steel exhaust designed for performance and sound. This system fits 2015-2017 WRX and WRX STI models. It promises a better exhaust note and improved performance for your car.
What We Like:
- Built to last: Made from tough T-304 stainless steel, this exhaust resists rust and corrosion. It’s designed to last as long as your vehicle.
- Improved sound: The system’s design helps reduce back pressure in your exhaust. This means a deeper, more powerful sound for your car.
- Easy to install: It’s a direct bolt-on system. You won’t need to drill or make any changes to your car’s original setup. All the necessary parts, like gaskets and hardware, are included.
- Quality construction: Computerized bends and TIG welding ensure strength and durability. This means it can handle the pressure and won’t corrode easily.
What Could Be Improved:
- Vehicle fitment confusion: The product description mentions it fits 2015-2017 WRX/WRX STI, but also lists fitment for 2004-2015 TITAN. This could be confusing for buyers looking for a specific vehicle fit.
The PHILTOP Cat-Back System offers a significant upgrade for your WRX or WRX STI. It provides a more aggressive sound and a durable, long-lasting exhaust solution.
2. DNA MOTORING CBE-WRX15-D Stainless Steel Cat Back Exhaust System [Compatible with 15-17 Subaru WRX & STI Sedan]
![DNA MOTORING CBE-WRX15-D Stainless Steel Cat Back Exhaust System [Compatible with 15-17 Subaru WRX & STI Sedan]](https://m.media-amazon.com/images/I/41p31A78IxL._SL500_.jpg)
Rating: 9.0/10
Ready to give your 15-17 Subaru WRX or STI Sedan a serious upgrade? The DNA MOTORING CBE-WRX15-D Stainless Steel Cat Back Exhaust System is here to transform your ride. This exhaust system is designed to boost your car’s performance and give it an awesome sound. It’s made from tough, high-quality materials to last a long time. Get ready for a more powerful and exciting driving experience!
What We Like:
- This exhaust fits perfectly on 2015-2017 Subaru WRX and STI Sedans.
- It’s built with strong T-304 stainless steel. This means it won’t rust or break easily.
- The system is computer-made with smooth bends. This helps exhaust gases flow better.
- You can expect a big power boost! It adds 15 to 25 horsepower and more torque.
- It makes a deep, cool sound that’s not too loud.
- The 4-inch muffler tip looks great and comes with a removable silencer.
- It reduces back pressure, making your engine work more efficiently.
What Could Be Improved:
- While it offers a great sound, some drivers might want an even louder or more custom tone.
- Installation can be a bit tricky for beginners. Having some mechanical know-how or getting help might be needed.
This DNA MOTORING exhaust system is a fantastic way to enhance your Subaru WRX or STI. It delivers noticeable performance gains and a satisfying exhaust note.
3. KAX Stainless Steel Cat Back Exhaust System Compatible with 2015-2017 WRX
Rating: 8.6/10
Give your 2015-2017 WRX or WRX STI a serious upgrade with the KAX Stainless Steel Cat Back Exhaust System. This exhaust is built tough and designed to make your Subaru sound and perform better. It’s made from high-quality stainless steel, which means it can handle the heat and won’t rust. This system is a direct fit, so you won’t have to cut or drill anything to install it. Get ready for a smoother ride and a sportier sound!
What We Like:
- Made from strong, rust-resistant stainless steel for long-lasting use.
- Designed to fit your 2015-2017 WRX or WRX STI perfectly, making installation simple.
- Helps your car run better by getting exhaust gases out efficiently.
- Reduces noise and pollution from your exhaust.
- It’s built to resist high temperatures and repeated heating and cooling.
What Could Be Improved:
- While it enhances performance, the exact horsepower gains might vary.
- The “premium” aspect could be more detailed with specific stainless steel grade.
This KAX exhaust system offers a great combination of durability, performance, and easy installation for your Subaru. It’s a solid choice for anyone looking to improve their WRX or STI’s exhaust.
4. REV9 CB-083 FlowMaxx Stainless Steel Cat-back Exhaust Quad-tip system for Subaru WRX (VB) 2022-2025 All Trims
Rating: 9.3/10
Upgrade your Subaru WRX (VB) with the REV9 CB-083 FlowMaxx Stainless Steel Cat-back Exhaust Quad-tip system. This exhaust is designed to fit all 2022-2025 WRX models. It’s a direct bolt-on system, making installation a breeze. The system features a 2.5-inch inlet and outlet. It also boasts stylish 3.5-inch polished stainless steel double-walled quad tips. This exhaust improves how your engine breathes and makes your ride quieter and more comfortable. It works with your car’s original emissions equipment, so it’s street legal.
What We Like:
- Direct fit for easy installation.
- Improves exhaust flow for better performance.
- Reduces noise for a more comfortable drive.
- CARB legal, meaning it meets emissions standards.
- Durable stainless steel construction for long-lasting use.
- Stylish quad-tip design looks great.
- Backed by a 1-year Rev9 warranty.
What Could Be Improved:
- While it reduces noise, some enthusiasts might prefer a louder exhaust note.
The REV9 FlowMaxx cat-back exhaust system offers a fantastic blend of performance, comfort, and style for your Subaru WRX. It’s a smart upgrade that enhances your driving experience.
5. DNA MOTORING CBE-WRX15-S Cat Back Exhaust System [Compatible with 15-17 Subaru WRX & Sti]
![DNA MOTORING CBE-WRX15-S Cat Back Exhaust System [Compatible with 15-17 Subaru WRX & Sti]](https://m.media-amazon.com/images/I/41mtkb9fAGL._SL500_.jpg)
Rating: 8.9/10
The DNA MOTORING CBE-WRX15-S Cat Back Exhaust System is a fantastic upgrade for your 15-17 Subaru WRX & Sti. It’s built tough and designed to make your car perform and sound better.
What We Like:
- It fits your 2015-2017 Subaru WRX and STI perfectly.
- It’s made from strong T-304 stainless steel.
- Computer-controlled bending ensures it’s built well.
- It can add 15 to 25 horsepower and boost low-end torque.
- It gives your car a deep, smooth, and aggressive sound.
- It helps exhaust gases flow smoothly, making your engine work better.
- Welded flanges are strong and resist rust and pressure.
- Larger pipes and better mufflers reduce back pressure.
- This system makes your car sound amazing.
What Could Be Improved:
- Installation might require some mechanical skill.
- The aggressive sound might be too loud for some drivers.
This exhaust system is a solid choice for WRX and STI owners wanting more power and a great sound. You’ll feel the difference and hear it too.
The Ultimate Buying Guide: A Purrfect Choice for Your WRX
So, you want to give your Subaru WRX a serious upgrade? A cat-back exhaust system is a fantastic way to make your car sound, look, and even perform better. It’s a popular modification that many WRX owners love. Let’s dive into what you need to know before you buy!
Why a Cat-Back Exhaust?
A cat-back exhaust replaces the parts of your exhaust system from the catalytic converter all the way back to the tailpipe. This is where most of the sound and style comes from. It’s a great starting point for exhaust upgrades because it doesn’t mess with emissions controls.
Key Features to Look For
- Sound Level: Do you want a subtle rumble or a loud roar? Exhausts come in different sound levels. Some are designed to be aggressive, while others are more mellow.
- Drone: This is an annoying, constant hum you might hear inside the car at certain speeds. Good exhausts minimize drone.
- Tip Style: The tailpipe tips are what you see. They come in various sizes, finishes (like polished stainless steel, carbon fiber, or burnt blue), and shapes.
- Mandrel Bends: This is a fancy term for how the pipes are shaped. Mandrel bending keeps the pipe the same size throughout the curve, which helps exhaust gases flow better.
- Bolt-On Design: Most good cat-back systems are designed to bolt directly onto your existing exhaust hangers. This makes installation easier.
Important Materials
The material of your exhaust is super important for how long it lasts and how it sounds.
- Stainless Steel: This is the most common and best choice. It resists rust and corrosion really well.
- 304 Stainless Steel: This is the premium stuff. It’s very strong and won’t rust easily, even in bad weather. It sounds great and lasts a long time.
- 409 Stainless Steel: This is a good, more affordable option. It’s still good at resisting rust, but maybe not as tough as 304.
- Titanium: This is super lightweight and can create a unique, high-pitched sound. However, it’s much more expensive.
Factors That Improve or Reduce Quality
What makes one exhaust better than another?
- Pipe Diameter: For most WRXs, a 3-inch diameter pipe is a sweet spot. It’s big enough for good flow but not so big that it loses low-end torque.
- Muffler Design: The muffler is key to controlling sound. Some use packing material, others use chambers. Chambered mufflers often give a deeper, more aggressive tone.
- Welding Quality: Clean, strong welds mean a durable exhaust. Look for neat, consistent welds.
- Fitment: A good exhaust system will fit your WRX perfectly without needing lots of extra work.
Things that can reduce quality include cheap materials, poor welding, and designs that create a lot of drone.
User Experience and Use Cases
What’s it like to actually have a cat-back exhaust on your WRX?
- Daily Driving: Many owners enjoy a slightly sportier sound on their commute. Choosing an exhaust with minimal drone is crucial for comfort.
- Spirited Driving and Track Days: A more aggressive exhaust note can add to the thrill of driving your WRX hard.
- Show Cars: Fancy exhaust tips can really make the rear of your car stand out.
Most people find that a cat-back exhaust makes their WRX sound more like the performance car it is. It’s a rewarding upgrade for many drivers.
Frequently Asked Questions (FAQ)
Q: What are the main benefits of a cat-back exhaust for my WRX?
A: The main benefits are a sportier sound, improved looks with custom tips, and a slight increase in horsepower and torque due to better exhaust flow.
Q: Will a cat-back exhaust affect my car’s warranty?
A: Generally, a cat-back exhaust won’t void your entire warranty. However, if a problem occurs that can be directly linked to the exhaust modification, that specific part of the warranty might be affected.
Q: How much louder will my WRX be with a cat-back exhaust?
A: It depends on the specific exhaust system. Some are designed to be only slightly louder, while others are very aggressive. You can usually find sound clips online to get an idea.
Q: Is a cat-back exhaust difficult to install?
A: For most people with basic tools, a cat-back exhaust is a manageable DIY project. It usually bolts onto existing points. However, if you’re not comfortable, a professional mechanic can install it.
Q: What’s the difference between a cat-back and a turbo-back exhaust?
A: A cat-back replaces everything from the catalytic converter back. A turbo-back replaces everything from the turbocharger all the way to the tailpipe, including the catalytic converter. Turbo-backs can offer more performance gains but may have emissions implications.
Q: Can I choose different exhaust tip styles?
A: Yes! Exhaust tips come in many styles, finishes, and sizes. You can pick ones that match your WRX’s look.
Q: How do I know if an exhaust will have drone?
A: Look for reviews or product descriptions that specifically mention drone. Exhausts with good engineering and specific muffler designs are less likely to have it.
Q: Does a cat-back exhaust improve fuel economy?
A: While a cat-back can slightly improve engine efficiency, the difference in fuel economy is usually very small and often offset by a heavier foot enjoying the new sound!
Q: What’s the lifespan of a stainless steel cat-back exhaust?
A: A good quality 304 stainless steel cat-back exhaust can last for many years, often the lifetime of the car, especially if properly maintained.
Q: Should I get a single exit or dual exit cat-back exhaust?
A: This is mostly an aesthetic choice. Dual exit exhausts are more common on WRXs and offer a balanced, aggressive look. Single exits are less common but can be a unique option.
In conclusion, every product has unique features and benefits. We hope this review helps you decide if it meets your needs. An informed choice ensures the best experience.
If you have any questions or feedback, please share them in the comments. Your input helps everyone. Thank you for reading.
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