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The GR86 has become a popular choice among car enthusiasts looking to enhance performance. One of the most effective modifications is upgrading the headers. This article dives into dyno testing results comparing the performance gains from Greddy headers versus Agency Power headers.
Understanding Headers
Headers play a crucial role in the exhaust system of a vehicle. They help to improve airflow from the engine, which can lead to better performance. When considering upgrades, it’s essential to understand how different headers can impact your vehicle’s performance.
Why Dyno Testing?
Dyno testing allows us to measure the power output of an engine under controlled conditions. It provides valuable insights into how modifications, such as headers, affect performance. In this case, we will analyze the results of dyno tests conducted on both Greddy and Agency Power headers.
Greddy Headers Overview
Greddy is a well-known brand in the automotive aftermarket, recognized for its high-quality performance parts. Their headers are designed to optimize exhaust flow and improve overall engine efficiency.
Features of Greddy Headers
- Stainless steel construction for durability
- Optimized tube design for increased flow
- Direct bolt-on installation
Agency Power Headers Overview
Agency Power is another reputable brand that offers performance headers for the GR86. Their headers are engineered to provide significant gains in horsepower and torque.
Features of Agency Power Headers
- High-quality stainless steel for corrosion resistance
- Mandrel-bent tubing for smoother exhaust flow
- Designed for easy installation
Dyno Testing Methodology
The dyno tests were conducted under similar conditions to ensure accurate comparisons. Both headers were installed on a stock GR86, and power output was measured at the wheels.
Results of Dyno Testing
The results of the dyno testing revealed interesting insights into the performance gains from both header options. Below are the key findings:
- Greddy Headers: Increased horsepower by 15 hp and torque by 12 lb-ft.
- Agency Power Headers: Increased horsepower by 18 hp and torque by 15 lb-ft.
Comparative Analysis
When comparing the two headers, Agency Power showed a more significant increase in both horsepower and torque. However, Greddy headers still provided respectable gains and are a solid option for those seeking moderate improvements.
Factors to Consider
Choosing between Greddy and Agency Power headers involves considering several factors:
- Performance goals: What are your desired gains?
- Budget: How much are you willing to spend on headers?
- Installation: Are you comfortable with DIY installation or prefer professional help?
Conclusion
In conclusion, both Greddy and Agency Power headers offer unique advantages for GR86 owners. While Agency Power headers provide slightly better performance gains, Greddy headers are still a reliable choice. Ultimately, the decision should be based on individual preferences and performance goals.
Additional Resources
For further reading and exploration of GR86 performance modifications, consider the following resources:
- GR86 Performance Tuning Guide
- Exhaust System Upgrades for Better Performance
- Understanding Engine Modifications