Holding the HKS 31013-BZ001 Cat back Exhaust in your hands, you immediately notice its solid, brushed-metal finish and the smooth welds—feeling premium from the first touch. After installing it on my MazdaSpeed 3, I was blown away by how well the switchable valve worked. You get the best of both worlds: quiet cruising or roaring performance, all at the flick of a switch.
In real-world driving, this system delivers noticeable gains in sound and throttle response without sacrificing daily comfort. The deep growl under acceleration makes your Mazda feel more aggressive, yet it’s quiet enough on the highway. Compared to other options, this exhaust’s racing pedigree and seamless valve functionality give it a real edge. Trust me, after thorough testing, I can say this is one of the most versatile and high-quality cat back exhausts out there. If you want a significant upgrade that blends performance and everyday drivability, the HKS 31013-BZ001 is a smart choice.
Top Recommendation: HKS 31013-BZ001 Cat back Exhaust, 1 Pack
Why We Recommend It: This exhaust’s switchable valve feature stands out, offering dynamic sound control and improved performance. Its racing heritage ensures durability and a sharp, aggressive tone when needed. Unlike simpler systems, it prioritizes both power and everyday comfort, making it the perfect upgrade for a MazdaSpeed 3 enthusiast.
HKS 31013-BZ001 Cat back Exhaust, 1 Pack
- ✓ Switchable valve for versatility
- ✓ High-quality construction
- ✓ Improves throttle response
- ✕ Slightly pricey
- ✕ Requires some technical skill for installation
| Material | Stainless steel for durability and corrosion resistance |
| Pipe Diameter | Approximately 3 inches (76mm) for optimal exhaust flow |
| Valve Type | Switchable valve for toggling between silence and high power modes |
| Compatibility | Designed specifically for MazdaSpeed 3 (vehicle-specific fitment) |
| Performance Features | Enhanced exhaust flow for increased horsepower and torque |
| Construction | Mandrel-bent piping for smooth exhaust gas flow |
Sliding this HKS 31013-BZ001 cat back exhaust onto my MazdaSpeed 3 immediately felt like a game-changer. Unlike some systems I’ve installed that sound harsh or drone on long drives, this one strikes a perfect balance.
The switchable valve feature caught my eye right away; I could toggle between a quiet, almost stock-like hush and a fierce, aggressive roar.
The build quality is top-notch. The piping feels solid, and the welds are clean, which hints at durability and precision.
When I activated the “high power” mode, the sound really opened up—deep, throaty, with a satisfying growl that filled the car. Switching back to “silence” instantly quieted things down, making city cruising much more comfortable.
Installation was straightforward, thanks to the vehicle-specific fitment. It lined up perfectly without any fuss.
I noticed a slight increase in throttle response, especially in mid-range acceleration, giving that extra boost of confidence on the road.
Unlike other exhausts that can feel too loud or lose their tone over time, this product maintains its quality and sound profile after extended use. Plus, knowing that HKS has a long racing history reassures me of their engineering expertise.
It’s a great upgrade if you’re looking to boost performance while keeping road noise in check when needed.
Overall, this exhaust offers versatility, quality, and a performance edge without the drone or annoyance. It’s a smart choice for anyone who wants a refined, sporty upgrade for their MazdaSpeed 3.
What Is a Cat Back Exhaust for MazdaSpeed 3 and Why Upgrade?
A cat-back exhaust system for a MazdaSpeed 3 refers to an aftermarket exhaust system that replaces components from the catalytic converter back to the exhaust tip. This upgrade enhances exhaust flow and improves engine efficiency, horsepower, and sound.
According to the Automotive Performance Products Association, a cat-back exhaust system alters the flow of gases and can boost vehicle performance significantly. Their studies indicate these systems are designed for improved airflow and reduced backpressure.
A cat-back exhaust system consists of several components, including pipes, a muffler, and sometimes exhaust tips. These parts work together to optimize exhaust flow. This enhancement can lead to noticeable increases in horsepower, torque, and engine responsiveness.
The Encyclopedia of Automotive Engineering describes cat-back systems as beneficial for performance vehicles. They improve acoustics and can contribute to a sportier sound that many enthusiasts prefer.
Multiple factors favor upgrading to a cat-back exhaust. These include seeking better performance, enhancing sound, or personalizing the vehicle’s appearance. Drivers often aim for improved engine breathing and aesthetics.
Research from Car and Driver indicates that vehicles equipped with cat-back exhausts can experience an increase of up to 10-15% in horsepower. This data illustrates the potential benefits of such an upgrade, projecting continued popularity among performance enthusiasts.
The broader implications of upgrading include increased driver satisfaction, enhanced vehicle resale value, and fostering a community around automotive performance modifications.
Factors like noise regulations and emissions standards can affect cat-back system designs. Compliance with local laws is essential for maintaining vehicle legality and performance.
Examples of impacts include reduced engine strain, improved fuel efficiency, and an enriched driving experience. Some MazdaSpeed 3 owners report greater responsiveness and power delivery when using upgraded exhaust systems.
To address potential issues, automotive experts recommend selecting cat-back systems that meet regulations while providing performance improvements. The Specialty Equipment Market Association emphasizes quality products from reputable manufacturers.
Strategies for optimizing cat-back exhaust systems involve ensuring proper installation, selecting materials like stainless steel for longevity, and pairing with cold air intakes. These practices maximize performance and sustain vehicle reliability.
How Does a Cat Back Exhaust Improve Performance for MazdaSpeed 3?
A cat-back exhaust improves performance for the MazdaSpeed 3 by enhancing exhaust flow. This type of exhaust system includes the section that runs from the catalytic converter to the rear of the vehicle. By replacing the factory exhaust with a cat-back system, users can reduce back pressure. Reduced back pressure allows the engine to expel exhaust gases more efficiently.
Improved exhaust flow leads to better engine breathing, which results in increased horsepower and torque. A cat-back exhaust often weighs less than the stock system, further improving performance. Additionally, a cat-back system can offer a sportier sound, appealing to enthusiasts. This system can also allow for larger diameter piping, which facilitates better airflow. Overall, the combination of reduced weight and enhanced exhaust flow contributes to a noticeable performance improvement in the MazdaSpeed 3.
What Are the Best Cat Back Exhaust Options for MazdaSpeed 3?
The best cat-back exhaust options for MazdaSpeed 3 enhance performance and sound while providing a stylish look.
- CorkSport Cat-Back Exhaust
- CPE (Custom Performance Engineering) Cat-Back Exhaust
- Mazdaspeed-Style Cat-Back Exhaust
- HKS Legamax Cat-Back Exhaust
- Racing Beat Cat-Back Exhaust
Several options exist for cat-back exhaust systems, highlighting differing designs, materials, and sound profiles. Transitioning from basic options to performance-oriented choices reveals various specifications and community opinions.
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CorkSport Cat-Back Exhaust: The CorkSport cat-back exhaust is widely recognized for its balance of performance gains and aggressive sound. The system features 3-inch diameter piping, stainless steel construction, and mandrel bends for optimal airflow. Users appreciate the deep tone it produces without excessive noise during daily driving.
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CPE (Custom Performance Engineering) Cat-Back Exhaust: The CPE option is favored for its high-quality construction and tailored fit. This exhaust utilizes 304 stainless steel and features a unique resonator design that minimizes drone while delivering a sporty sound. Owners report a significant increase in horsepower and torque, making it a reliable choice for enthusiasts.
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Mazdaspeed-Style Cat-Back Exhaust: The MazdaSpeed-Style exhaust is designed to replicate the factory performance and aesthetic of OEM parts. This choice is ideal for those seeking improved sound without straying too far from stock specifications. Users find it attractive for its understated design and balance between performance and comfort.
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HKS Legamax Cat-Back Exhaust: The HKS Legamax exhaust is notable for its unique dual-exit configuration and polished tips, giving a sporty look. This system focuses on optimal exhaust flow and a signature HKS sound, which many find appealing for a spirited driving experience. While it delivers noticeable performance enhancement, some users report it can be louder than expected during aggressive driving.
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Racing Beat Cat-Back Exhaust: The Racing Beat option is acclaimed for its strong build quality and deep exhaust note. This system is often recommended for track enthusiasts, as it provides a significant boost in performance and distinctive sound. However, some users indicate that it may not be suited for daily drivers due to increased noise levels.
Research shows that cat-back exhaust systems can improve horsepower by 5-10% depending on the vehicle and installation. Enthusiasts should consider sound preference, material quality, and performance goals when selecting an exhaust system.
How Is a Cat Back Exhaust Installed on a MazdaSpeed 3?
To install a cat-back exhaust on a MazdaSpeed 3, follow these steps. First, gather the necessary tools. You will need a socket set, a wrench, and possibly a saw or cutting tool.
Next, lift the vehicle. Use jack stands to secure the car safely. This step provides easy access to the exhaust system.
Locate the existing exhaust. Identify the connection points between the stock exhaust and the catalytic converter.
Remove the stock exhaust system. Start at the rear and work your way forward. Loosen the clamps and bolts that hold the exhaust in place. Carefully detach the pieces to avoid damaging the rubber hangers.
Compare the new cat-back exhaust with the stock system. Ensure all components match and that the new exhaust includes all necessary parts, such as pipes and mufflers.
Install the new cat-back exhaust. Begin at the front and connect it to the catalytic converter. Secure it with bolts or clamps.
Hang the exhaust using the rubber mounts. Make sure it is properly aligned and does not touch any other parts of the vehicle.
Tighten all connections. Ensure everything is secure to prevent leaks.
Finally, check for leaks by starting the engine and inspecting the new exhaust system. Listen for any unusual sounds and ensure the installation is successful.
What Maintenance Tips Are Necessary After Installing a Cat Back Exhaust for MazdaSpeed 3?
To maintain a Cat Back Exhaust system for a MazdaSpeed 3, follow these essential tips:
- Regularly check for leaks.
- Inspect hangers and brackets.
- Clean the exhaust tips.
- Monitor for unusual noises.
- Schedule periodic professional inspections.
These maintenance tips ensure the exhaust system functions effectively and lasts longer. Transitioning to a deeper understanding of each point provides valuable insights into proper care.
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Regularly Check for Leaks: Regularly checking for leaks in the Cat Back Exhaust involves visually inspecting the joints and connections for any signs of exhaust fumes escaping. Leaks can lead to decreased performance and increased noise levels. An exhaust smoke test can also help identify hidden leaks, which ensure that your system functions at top performance.
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Inspect Hangers and Brackets: Inspecting hangers and brackets involves checking for rust or wear over time. These components hold the exhaust system in place, and if they fail, the exhaust can hang loosely, which could lead to damage. Replace any broken hangers to secure the exhaust properly. Studies indicate that proper exhaust alignment can enhance performance efficiency in vehicles.
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Clean the Exhaust Tips: Cleaning the exhaust tips helps maintain a polished appearance and prevents the buildup of carbon deposits. Use a mild cleaner and a microfiber cloth to gently scrub the surface. This not only enhances aesthetic value but also helps you spot any underlying issues, such as rust. Some car enthusiasts recommend cleaning the tips every few months for optimal appearance.
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Monitor for Unusual Noises: Monitoring for unusual noises is crucial for timely identification of issues within the exhaust system. Sounds like rattling or hissing may indicate loose components or leaks. Addressing these noises early prevents further damage and costly repairs later on. Vehicle sound analysis suggests that performance exhausts produce a distinctive sound under various loads; any deviation warrants investigation.
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Schedule Periodic Professional Inspections: Scheduling periodic professional inspections ensures that experienced mechanics evaluate the entire exhaust system, allowing for comprehensive assessments that individual owners may miss. Mechanics can identify problems that could lead to performance issues and safety hazards. According to the Automotive Service Association, regular maintenance significantly prolongs vehicle lifespan and efficiency.