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The A90 Supra has quickly become a favorite among car enthusiasts, thanks to its impressive performance and sleek design. One of the most significant upgrades that owners consider is the downpipe. This article will explore the sound differences between the stock downpipe and aftermarket options from Agency Power and Takeda.
Understanding Downpipes
A downpipe is a critical component of a vehicle’s exhaust system. It connects the turbocharger to the rest of the exhaust system, allowing exhaust gases to exit the engine efficiently. Upgrading the downpipe can lead to enhanced performance and a more aggressive sound.
Stock Downpipe Sound Profile
The stock downpipe on the A90 Supra is designed for optimal emissions control and noise regulation. While it performs adequately, many enthusiasts find it lacks the aggressive tone that aftermarket options provide.
Characteristics of Stock Sound
The sound profile of the stock downpipe can be characterized by:
- Smooth and refined tone
- Moderate volume under acceleration
- Minimal turbo spool sound
Aftermarket Downpipe Options
Aftermarket downpipes can significantly alter the sound and performance of the A90 Supra. Two popular options are from Agency Power and Takeda, both known for their quality and performance enhancements.
Agency Power Downpipe
Agency Power offers a high-performance downpipe that is designed to maximize exhaust flow while producing a more aggressive sound. Key features include:
- High-quality stainless steel construction
- Improved turbo spool sound
- Enhanced exhaust note
Takeda Downpipe
Takeda’s downpipe is another excellent option for A90 Supra owners looking to enhance their vehicle’s sound and performance. Features of the Takeda downpipe include:
- Mandrel-bent tubing for smooth exhaust flow
- Aggressive sound profile
- Easy installation
Sound Comparison
To truly appreciate the differences between the stock downpipe and the aftermarket options, a sound test is essential. This test evaluates the volume, tone, and overall driving experience with each downpipe.
Testing Methodology
The sound test was conducted under controlled conditions, with the following parameters:
- Engine revs at idle, 2,000 RPM, and 4,000 RPM
- Acceleration runs from 0 to 60 mph
- Sound level measurements taken with a decibel meter
Results
The results from the sound test revealed significant differences:
- Stock downpipe: Average sound level of 75 dB at full throttle.
- Agency Power downpipe: Average sound level of 85 dB at full throttle with a deeper tone.
- Takeda downpipe: Average sound level of 82 dB at full throttle with a more aggressive pitch.
Driving Experience
Beyond just sound, the driving experience is also enhanced with aftermarket downpipes. Both Agency Power and Takeda options provide a more engaging and thrilling experience.
Agency Power Driving Experience
With the Agency Power downpipe, drivers can expect:
- Improved throttle response
- Enhanced turbocharger performance
- A more visceral driving experience
Takeda Driving Experience
The Takeda downpipe offers a different but equally rewarding experience:
- Quicker spool times
- Increased horsepower and torque
- More aggressive sound during acceleration
Conclusion
Choosing between the stock downpipe and aftermarket options from Agency Power and Takeda ultimately comes down to personal preference. If you desire a more aggressive sound and improved performance, both aftermarket downpipes are excellent choices.
In summary, the sound test clearly demonstrated the advantages of upgrading the downpipe, providing a more thrilling driving experience for A90 Supra owners.