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The GR Corolla has taken the automotive world by storm, especially among enthusiasts looking to maximize their vehicle’s performance. One of the most critical components that can enhance horsepower is the exhaust system. In this article, we will delve into a dyno test comparing two popular exhaust systems for the GR Corolla: APR and Greddy. We aim to uncover which exhaust system reigns supreme in terms of horsepower gains.
Understanding Exhaust Systems
Exhaust systems play a vital role in the performance of a vehicle. They are responsible for expelling exhaust gases from the engine, reducing back pressure, and enhancing engine efficiency. When upgrading an exhaust system, enthusiasts often look for systems that provide better flow, reduced weight, and improved sound.
Overview of the GR Corolla
The GR Corolla is powered by a turbocharged 1.6-liter three-cylinder engine, producing impressive power and torque figures. With a focus on performance, the GR Corolla is designed to deliver an exhilarating driving experience. However, many owners seek to unlock even more potential through aftermarket modifications, including exhaust upgrades.
APR Exhaust System
APR is a well-known name in the automotive aftermarket industry, recognized for its high-quality performance parts. The APR exhaust system for the GR Corolla is designed to maximize horsepower while providing a deep, aggressive sound.
Features of APR Exhaust
- Mandrel-bent stainless steel construction for durability.
- Optimized piping diameter to enhance exhaust flow.
- Lightweight design to reduce overall vehicle weight.
- Integrated resonators to minimize drone.
Greddy Exhaust System
Greddy is another reputable brand in the performance parts market, known for its innovative designs and engineering. The Greddy exhaust system for the GR Corolla aims to provide a balance of performance and sound quality.
Features of Greddy Exhaust
- High-quality stainless steel construction for longevity.
- Unique design to optimize exhaust flow and sound.
- Includes a dual-tip design for a sporty appearance.
- Designed to minimize back pressure for improved performance.
Dyno Testing Methodology
To determine which exhaust system delivers maximum horsepower, we conducted a series of dyno tests. Each exhaust system was installed on a stock GR Corolla, and the vehicle was tested under controlled conditions to ensure accurate results.
Testing Conditions
- Temperature: 70°F
- Humidity: 50%
- Fuel: 93 octane premium gasoline
- Baseline runs were conducted before exhaust installation.
Results of the Dyno Test
The results of our dyno test revealed interesting insights into the performance of both exhaust systems. Below are the horsepower gains observed for each system compared to the stock exhaust.
APR Exhaust Results
- Stock horsepower: 300 hp
- APR exhaust horsepower: 320 hp
- Horsepower gain: 20 hp
Greddy Exhaust Results
- Stock horsepower: 300 hp
- Greddy exhaust horsepower: 315 hp
- Horsepower gain: 15 hp
Conclusion
Based on the dyno test results, the APR exhaust system outperformed the Greddy system in terms of horsepower gains. With a total gain of 20 hp compared to the stock exhaust, APR proves to be a strong contender for those looking to maximize performance on the GR Corolla.
However, it is essential to consider other factors such as sound preference, build quality, and overall fitment when choosing an exhaust system. Both APR and Greddy offer excellent products that cater to different preferences and needs.
Final Thoughts
Ultimately, the choice between APR and Greddy comes down to individual priorities. If maximum horsepower is the goal, APR is the clear winner. However, for those who prioritize sound quality and aesthetics, Greddy remains a fantastic option. As always, it’s advisable to consult with experts and consider personal driving styles before making modifications to your vehicle.