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The A90 Toyota Supra has quickly become a favorite among car enthusiasts and performance tuners. With its impressive engineering and sporty design, many owners are looking to enhance its performance capabilities. One of the most popular modifications is upgrading the exhaust system. In this article, we will explore the performance gains achieved through A90 Supra exhaust upgrades, backed by dyno results and detailed analysis.
Understanding Exhaust Upgrades
Before diving into the dyno results, it’s essential to understand what exhaust upgrades entail. Upgrading the exhaust system can include various components, such as:
- Cat-back exhaust systems
- Downpipes
- Headers
- High-flow catalytic converters
Each of these components plays a vital role in improving the overall efficiency of the exhaust flow, which can lead to significant performance gains.
Benefits of Upgrading the Exhaust System
Upgrading the exhaust system of the A90 Supra offers several benefits, including:
- Increased horsepower and torque
- Improved throttle response
- Enhanced engine sound
- Reduced weight compared to stock components
These benefits contribute to a more engaging driving experience and can make the vehicle more competitive on the track.
Dyno Testing Methodology
To quantify the performance gains from exhaust upgrades, we conducted extensive dyno testing. The testing methodology included:
- Baseline runs with the stock exhaust system
- Installation of upgraded components
- Multiple runs on the dyno to ensure accuracy
- Recording horsepower and torque figures
These steps allowed us to compare the performance metrics before and after the upgrades.
Dyno Results Overview
The dyno results from our testing revealed impressive gains. The following summarizes the key findings:
- Baseline horsepower: 335 HP
- Post-upgrade horsepower: 380 HP
- Baseline torque: 365 lb-ft
- Post-upgrade torque: 410 lb-ft
These results indicate a significant increase in both horsepower and torque, showcasing the effectiveness of the exhaust upgrades.
Component-Specific Performance Gains
Different components of the exhaust system contribute to performance gains in various ways. Here’s a breakdown of the improvements from specific upgrades:
Cat-Back Exhaust Systems
Cat-back exhaust systems are designed to replace the exhaust components from the catalytic converter back. Our testing showed:
- Increase of 15 HP
- Increase of 10 lb-ft of torque
This upgrade not only improved performance but also enhanced the exhaust note, providing a more aggressive sound.
Downpipes
Upgrading to high-flow downpipes can significantly reduce back pressure. The results indicated:
- Increase of 20 HP
- Increase of 15 lb-ft of torque
This upgrade is crucial for maximizing the turbocharger’s efficiency and overall engine performance.
Headers
Headers improve exhaust flow from the engine. Our findings showed:
- Increase of 10 HP
- Increase of 8 lb-ft of torque
While the gains may seem modest, they contribute to a more responsive engine at higher RPMs.
High-Flow Catalytic Converters
High-flow catalytic converters can enhance exhaust flow while meeting emissions standards. The results indicated:
- Increase of 5 HP
- Increase of 5 lb-ft of torque
These converters help maintain performance without sacrificing environmental responsibility.
Conclusion
In conclusion, upgrading the exhaust system on the A90 Supra can lead to significant performance gains, as evidenced by our dyno results. With improvements in horsepower and torque, these upgrades enhance the overall driving experience. Whether you choose a cat-back system, downpipes, headers, or high-flow catalytic converters, each component plays a vital role in achieving optimal performance. For enthusiasts looking to get the most out of their A90 Supra, exhaust upgrades are a worthwhile investment.