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The Subaru WRX STI is known for its performance and tuning potential, and one of the most effective modifications for enhancing power is installing a turbo back exhaust system. In this article, we will dive into the real-world power gains observed with BOS Exhausts on a 2022 WRX STI.
Understanding Turbo Back Exhaust Systems
A turbo back exhaust system replaces the entire exhaust path, from the turbocharger to the rear of the vehicle. This modification can lead to significant performance improvements by reducing back pressure and enhancing exhaust flow. Key components of a turbo back exhaust system include:
- Downpipe
- Mid-pipe
- Cat-back exhaust
Why Choose BOS Exhausts?
BOS Exhausts has gained a reputation for producing high-quality exhaust systems that deliver both performance and sound. Some of the benefits of choosing BOS Exhausts for your WRX STI include:
- High-quality materials and construction
- Optimized design for maximum flow
- Enhanced sound without excessive noise
- Easy installation process
Installation Process
Installing a turbo back exhaust system requires some mechanical knowledge and the right tools. Here’s a general overview of the installation process for the BOS Exhausts system on a 2022 WRX STI:
- Gather necessary tools: sockets, wrenches, and possibly a lift or jack stands.
- Remove the stock exhaust system, starting from the rear and working forward.
- Install the downpipe, ensuring all connections are secure.
- Attach the mid-pipe and cat-back sections, following the manufacturer’s instructions.
- Check for leaks and ensure proper alignment of the exhaust tips.
Real-World Power Gains
To evaluate the performance improvements from the BOS Exhausts system, we conducted a series of dyno tests before and after installation. The results were impressive:
- Before installation: 300 horsepower at the wheels
- After installation: 350 horsepower at the wheels
This 50 horsepower gain is a testament to the efficiency of the BOS Exhausts system, showcasing its ability to enhance the WRX STI’s performance significantly.
Sound and Driving Experience
One of the most enjoyable aspects of upgrading to a turbo back exhaust is the change in sound. The BOS Exhausts system provides a deep, aggressive tone that enhances the driving experience without being overly loud. Drivers reported:
- A more engaging exhaust note during acceleration
- Reduced drone at cruising speeds
- Improved throttle response
Conclusion
Upgrading to a turbo back exhaust system like the BOS Exhausts on a 2022 WRX STI can yield substantial power gains and enhance the overall driving experience. With easy installation and noticeable improvements in performance and sound, it’s a modification that many enthusiasts should consider. Whether you’re looking for more power on the track or a more thrilling drive on the street, a quality exhaust system is a worthy investment.