A cat-back exhaust system is one of the most popular upgrades among Subaru WRX owners. Designed to enhance exhaust flow and improve performance, this modification also adds a distinctive sound to match the WRX’s aggressive styling and turbocharged powertrain. In this article, we will explore the benefits, considerations, and features of WRX cat-back exhaust systems.
What Is a Cat-Back Exhaust?
A cat-back exhaust system replaces the factory exhaust components from the catalytic converter back to the exhaust tip. It usually consists of a mid-pipe, resonator, muffler, and exhaust tips. As it doesn’t touch the catalytic converter or header, it’s considered a rather simple modification that can seriously boost your WRX’s performance and sound without altering emissions compliance.
Benefits of a WRX Cat-Back Exhaust
Improved Performance:
A cat-back exhaust reduces backpressure, freeing exhaust gases to escape more readily.
Improved flow enhances horsepower and torque when complemented by other performance enhancements like a tune or an intake system.
Improved Sound
The most significant advantage of a cat-back exhaust is the sound it brings to the WRX. Depending on the design, it can produce a deeper, more aggressive exhaust note that amplifies the car’s turbocharged personality.
Many systems are designed to balance between performance-oriented growl and daily driving comfort.
Better Aesthetics:
Aftermarket cat-back systems often have a polished stainless steel or titanium finish, larger tips, and unique designs that can enhance the rear-end appeal of the WRX.
Durability:
Premium cat-back systems are made from rust- and corrosion-resistant materials such as stainless steel or titanium, ensuring longevity.
Choosing the Right WRX Cat-Back Exhaust
When choosing a cat-back system for your WRX, there are several factors to consider:
Material:
Stainless steel is the most popular choice as it offers a balance between durability and cost. Titanium systems are lighter but more expensive.
Exhaust Tone:
Different systems have different tones. Research sound clips or reviews to find a tone that suits your preference, whether it’s a subdued rumble or an aggressive roar.
Design:
Single-exit vs. dual-exit: While the stock WRX features a dual-exit exhaust, single-exit options can provide weight savings and a unique look.
Muffler design and resonators impact both sound and performance.
Performance Goals:
Some cat-back systems are designed for high-performance builds and pair well with upgraded downpipes or turbos.
Installation and Legal Considerations
Installation is typically bolt-on, making it a popular DIY project for WRX owners.
Since cat-back systems do not interfere with the catalytic converter, they are generally emissions-compliant. However, it’s essential to check local noise ordinances to ensure your chosen system adheres to regulations.
Most Popular WRX Cat-Back Brands
Well-known brands for the Subaru WRX cat-back exhaust system are:
Cobb Tuning: Excellent for high-quality performance with proper fitment.
Invidia: They offer a selection from mild to aggressive.
Borla: Acclaimed for deep, rich sounds from the exhaust.
HKS: Innovative designs blend with the theme of performance.
Conclusion
One of the best improvements that could be done for your Subaru WRX’s performance, sound, and look is having a cat-back exhaust. Be it getting some more power out of it, getting a richer sound by using that iconic Subaru rumble, or looking great; all this calls for getting a wrx cat-back exhaust system installed. Now, this system that fits your purposes can get your WRX into another class altogether with this exciting drive experience.
