The Impact of Upgrading the Brz Fa20 Camshafts: Power Gains and Cost Breakdown

by

The Subaru BRZ, equipped with the FA20 engine, has gained a reputation for its balanced performance and handling. However, many enthusiasts seek to enhance the power output of their vehicles through various modifications. One of the most effective upgrades is the camshaft replacement. In this article, we will explore the impact of upgrading the BRZ FA20 camshafts, focusing on the power gains and a detailed cost breakdown.

Understanding Camshafts and Their Role

Camshafts are crucial components in an engine that control the timing and duration of the valve openings. Upgrading camshafts can lead to significant improvements in engine performance by optimizing airflow and combustion efficiency. For the FA20 engine, which is naturally aspirated, the right camshaft profile can enhance power delivery across the RPM range.

Benefits of Upgrading the FA20 Camshafts

Upgrading the camshafts in the BRZ FA20 engine can yield several benefits, including:

  • Increased Horsepower: A well-designed camshaft can increase horsepower significantly, often adding 10-20% more power depending on the specific cam profile.
  • Improved Torque Curve: Upgraded camshafts can enhance the torque curve, providing better low-end and mid-range power, which is beneficial for daily driving.
  • Enhanced Engine Response: Camshaft upgrades can lead to quicker throttle response, making the car feel more lively and engaging to drive.
  • Compatibility with Other Mods: Upgrading camshafts can complement other performance modifications, such as headers and exhaust systems, to maximize overall performance.

Power Gains from Camshaft Upgrades

When upgrading the camshafts on the BRZ FA20, the power gains can vary based on the specific cam profile chosen and whether the vehicle is tuned accordingly. Here’s a breakdown of potential power gains:

  • Stock FA20 Performance: The stock FA20 engine produces around 200 horsepower and 151 lb-ft of torque.
  • With Performance Camshafts: Upgrading to performance camshafts can result in an increase to approximately 220-240 horsepower and improved torque figures.
  • Dyno Results: Many users report dyno results showing gains of 15-30 horsepower at the wheels after camshaft upgrades, especially when combined with a proper ECU tune.

Cost Breakdown of Camshaft Upgrades

While the performance benefits of upgrading camshafts are clear, it is also essential to consider the costs involved. Below is a detailed cost breakdown for upgrading the BRZ FA20 camshafts:

  • Camshaft Set: A quality set of aftermarket camshafts typically ranges from $600 to $1,200, depending on the brand and specifications.
  • Installation Costs: Professional installation can cost between $500 and $1,000, depending on labor rates and the complexity of the job.
  • Tuning Costs: After installing new camshafts, an ECU tune is highly recommended, costing between $300 and $800.
  • Total Estimated Cost: Overall, enthusiasts should budget between $1,400 and $3,000 for a complete camshaft upgrade, including parts and labor.

Considerations Before Upgrading

Before diving into a camshaft upgrade, there are several considerations that potential buyers should keep in mind:

  • Intended Use: Consider how you plan to use the vehicle. Track-focused builds may benefit more from aggressive cam profiles, while daily drivers might prefer a milder setup.
  • Supporting Modifications: Ensure that other supporting modifications, such as exhaust systems and intake upgrades, are in place to maximize the benefits of the camshaft upgrade.
  • Warranty Implications: Upgrading camshafts may void manufacturer warranties, so it’s essential to understand the implications before proceeding.
  • Maintenance Considerations: Performance camshafts may require more frequent maintenance and monitoring, especially in high-performance applications.

Conclusion

Upgrading the camshafts in the Subaru BRZ FA20 engine can significantly enhance performance, providing noticeable power gains and improved driving dynamics. However, potential buyers should weigh the costs and considerations before making the investment. With the right setup and tuning, enthusiasts can unlock the full potential of their BRZ, making it an even more thrilling driving experience.