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The FA20 engine, renowned for its lightweight and efficient design, has garnered attention in the automotive community. This article delves into a comparison between the stock FA20 engine and a modified version producing 400 horsepower. We will explore the performance differences on both the track and the street, providing insights for enthusiasts and potential builders.
Understanding the FA20 Engine
The FA20 engine is a flat-four engine developed by Subaru and Toyota, featuring a DOHC design and a displacement of 2.0 liters. It is known for its balance of power and efficiency, making it a popular choice in various models, including the Subaru BRZ and Toyota 86.
Stock FA20 Specifications
- Displacement: 2.0 liters
- Power Output: Approximately 200 hp
- Torque: 151 lb-ft
- Transmission: 6-speed manual or automatic
- Weight: Approximately 2,700 lbs
Modifying the FA20 to 400 HP
To achieve a power output of 400 hp, several modifications are typically required. These modifications can significantly alter the engine’s performance characteristics.
Key Modifications for 400 HP
- Upgraded turbocharger
- High-performance intercooler
- ECU tuning for optimal fuel and timing
- High-flow fuel injectors
- Performance exhaust system
- Upgraded intake system
Performance Comparison: Track vs. Street
When comparing the stock FA20 and the modified 400 hp version, the performance differences become apparent in both track and street scenarios.
Track Performance
On the track, the modified FA20 showcases its true potential. The added horsepower translates to improved lap times and overall handling.
- 0-60 mph: Stock – 6.0 seconds, Modified – 3.5 seconds
- Quarter Mile: Stock – 14.5 seconds, Modified – 11.5 seconds
- Top Speed: Stock – 140 mph, Modified – 165 mph
- Handling: Improved cornering stability with upgraded suspension
Street Performance
On the street, the driving experience shifts significantly. The modified engine provides a thrilling ride, but it also requires careful management of power delivery.
- Daily drivability: Stock – Smooth and predictable, Modified – Aggressive and responsive
- Fuel efficiency: Stock – 25 mpg, Modified – 18 mpg
- Noise levels: Stock – Quiet, Modified – Loud and sporty
Cost Considerations
When considering a modification to achieve 400 hp, it’s essential to evaluate the costs involved. This includes parts, labor, and potential maintenance.
- Upgraded Turbocharger: $2,500
- Intercooler: $1,000
- ECU Tuning: $500
- Fuel Injectors: $600
- Exhaust System: $1,200
- Intake System: $400
- Labor Costs: $1,000
Conclusion
In conclusion, the comparison between the stock FA20 and a modified 400 hp version reveals significant differences in performance, both on the track and the street. While the stock engine offers a reliable and efficient driving experience, the modified version provides exhilarating power and speed, albeit at the cost of daily drivability and fuel efficiency. Enthusiasts must weigh these factors carefully when considering modifications to their FA20 engines.