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The Scion FR-S is a popular choice among car enthusiasts looking to enhance performance and driving experience. With its lightweight design and rear-wheel-drive layout, it’s a fantastic platform for modifications. In this article, we will explore how to achieve over 100 horsepower gains on your Scion FR-S, providing a complete before-and-after review.
Understanding the Scion FR-S
The Scion FR-S, known for its sporty handling and sleek design, is equipped with a 2.0-liter flat-four engine. While it offers a thrilling driving experience, many owners seek to unlock additional power. Before diving into modifications, it’s essential to understand the vehicle’s stock performance.
- Engine type: 2.0L flat-four
- Stock horsepower: Approximately 200 hp
- Weight: Around 2,800 lbs
Initial Performance Testing
Before modifications, we conducted baseline performance testing to determine the Scion FR-S’s stock horsepower and torque. Using a dynamometer, we measured the vehicle’s output under controlled conditions.
The results were as follows:
- Peak horsepower: 198 hp at 7,000 RPM
- Peak torque: 151 lb-ft at 6,400 RPM
Modifications for Power Gains
To achieve over 100 horsepower gains, we implemented a series of modifications. Each component was carefully selected to maximize performance while maintaining reliability.
1. Cold Air Intake
Upgrading to a high-performance cold air intake allows the engine to breathe better, improving airflow and combustion efficiency. This modification can yield an immediate increase in horsepower.
2. Performance Exhaust System
A performance exhaust system reduces back pressure and enhances exhaust flow. By replacing the stock exhaust with a cat-back system, we can expect significant gains in both horsepower and sound.
3. ECU Tune
Tuning the engine’s ECU is crucial for optimizing performance after modifications. A professional tune adjusts fuel maps and ignition timing, leading to improved throttle response and horsepower.
4. Forced Induction
Adding a supercharger or turbocharger can dramatically increase horsepower. For our project, we opted for a supercharger kit, which provides a significant boost in power while maintaining the FR-S’s character.
5. Upgraded Fuel System
To support the increased power, we upgraded the fuel injectors and fuel pump. This ensures the engine receives adequate fuel during high-performance situations, preventing lean conditions.
Before-and-After Performance Testing
After completing the modifications, we returned to the dynamometer for a second round of testing. The results showcased the effectiveness of our upgrades.
- Peak horsepower: 310 hp at 6,500 RPM
- Peak torque: 260 lb-ft at 4,500 RPM
Driving Experience Post-Modifications
The driving experience after the modifications was nothing short of exhilarating. The added horsepower transformed the FR-S into a more responsive and thrilling machine. Acceleration was noticeably quicker, and the sound of the supercharger added a new layer of excitement.
Conclusion
Achieving over 100 horsepower gains on the Scion FR-S is entirely possible with the right modifications. By focusing on airflow, exhaust flow, tuning, and forced induction, we unlocked the potential of this fantastic sports car. Whether you’re a seasoned enthusiast or a newcomer, these upgrades can significantly enhance your driving experience.
Always remember to consider reliability and safety when modifying your vehicle. With the right approach, your Scion FR-S can become a true powerhouse on the road.