How to Achieve 50+ Horsepower Gains on the Scion Fr-s with Affordable Mods

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The Scion FR-S, known for its lightweight design and rear-wheel-drive layout, has captured the hearts of car enthusiasts. While it offers a thrilling driving experience, many owners seek to enhance its performance further. Achieving 50+ horsepower gains on the Scion FR-S is possible with a combination of affordable modifications. This article will guide you through various options to unlock your vehicle’s potential without breaking the bank.

Understanding the Scion FR-S Engine

The Scion FR-S is powered by a 2.0-liter flat-four engine, also known as the FA20. This engine is designed for efficiency and performance, but with a few tweaks, it can deliver significantly more power. Understanding the engine’s characteristics is crucial for selecting the right modifications.

Essential Mods for Power Gains

To achieve the desired horsepower gains, consider the following modifications:

  • Cold Air Intake: Replacing the stock intake with a cold air intake allows for better airflow, resulting in improved throttle response and horsepower.
  • Cat-Back Exhaust System: Upgrading to a cat-back exhaust system reduces back pressure and enhances exhaust flow, which can lead to noticeable power gains.
  • Tune: A proper tune adjusts the engine’s fuel maps and timing, optimizing performance and unleashing additional horsepower.
  • Headers: Aftermarket headers improve exhaust flow from the engine, further increasing horsepower and torque.
  • Lightweight Flywheel: A lightweight flywheel reduces rotational mass, allowing the engine to rev more freely and improving acceleration.

Step-by-Step Modification Guide

1. Installing a Cold Air Intake

The first step in your performance upgrade is to install a cold air intake. This mod is relatively easy and can be completed in a few hours. Follow these steps:

  • Gather necessary tools: socket set, screwdriver, and pliers.
  • Remove the factory air intake system by disconnecting the mass airflow sensor and loosening the clamps.
  • Install the new cold air intake according to the manufacturer’s instructions, ensuring all connections are secure.

2. Upgrading the Cat-Back Exhaust System

Next, consider upgrading the cat-back exhaust system. This mod enhances the sound and performance of your FR-S. Here’s how to do it:

  • Lift the car using jack stands for easy access.
  • Remove the stock exhaust system by unbolting it from the catalytic converter and the hangers.
  • Install the new cat-back exhaust, ensuring all connections are tight and secure.

3. Flashing a Tune

After installing the intake and exhaust, it’s time to flash a tune. A tune maximizes the gains from your mods. Follow these steps:

  • Purchase a tuning device compatible with the FR-S.
  • Connect the device to the OBD-II port and follow the prompts to upload the tune.
  • Test drive the vehicle to ensure the tune is functioning correctly.

4. Installing Aftermarket Headers

Headers are a more advanced modification that can yield significant power gains. Here’s how to install them:

  • Prepare the car by lifting it securely and removing the undercarriage cover if necessary.
  • Disconnect the battery and remove the stock headers by unbolting them from the engine and the exhaust system.
  • Install the new headers, ensuring all gaskets are in place and connections are tight.

5. Upgrading to a Lightweight Flywheel

Finally, consider upgrading to a lightweight flywheel to improve acceleration. Here’s how to do it:

  • Remove the transmission by following the appropriate steps for your vehicle.
  • Unbolt the stock flywheel and replace it with the lightweight version.
  • Reassemble the transmission and ensure everything is secure.

Additional Considerations

While the modifications mentioned can yield significant horsepower gains, it’s essential to consider a few additional factors:

  • Maintenance: Regular maintenance is crucial to keep your FR-S running smoothly after modifications.
  • Insurance: Check with your insurance provider to ensure your modifications are covered.
  • Local Regulations: Be aware of any local emissions regulations that may affect your modifications.

Conclusion

Achieving 50+ horsepower gains on the Scion FR-S is not only possible but also affordable with the right modifications. By following this guide, you can enhance your vehicle’s performance and enjoy a more exhilarating driving experience. Always remember to prioritize safety and compliance with local regulations when making modifications to your vehicle.