Upgrading Your Wrx Built Engine for Track Days: Camshafts, Internals, and Tuning

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Upgrading your WRX built engine for track days can significantly enhance performance and driving experience. This article will cover essential modifications, including camshafts, internals, and tuning, to help you maximize your vehicle’s potential on the track.

Understanding the WRX Engine

The Subaru WRX is renowned for its turbocharged flat-four engine, which provides excellent torque and power delivery. However, to achieve optimal performance on the track, understanding the engine’s components and their potential for upgrades is crucial.

Camshaft Upgrades

Camshafts play a vital role in the engine’s performance. By upgrading your camshafts, you can improve airflow and increase power output. Here are some key points to consider when upgrading camshafts:

  • Choose camshafts designed for high RPM performance.
  • Consider the duration and lift specifications to match your driving style.
  • Ensure compatibility with other engine components.

Types of Camshafts

There are several types of camshafts available for WRX engines:

  • Performance Camshafts: Designed for maximum power and torque.
  • Street Camshafts: Ideal for daily driving with improved performance.
  • Racing Camshafts: Optimized for track use, providing high RPM efficiency.

Upgrading Internals

When pushing your WRX to its limits, upgrading internal components is essential for reliability and performance. Key internal upgrades include:

  • Pistons: Lightweight forged pistons can withstand higher pressures.
  • Connecting Rods: Upgrade to stronger rods to handle increased power.
  • Crankshaft: Consider a forged crankshaft for durability under stress.

Benefits of Upgrading Internals

Upgrading the internals of your WRX engine offers several advantages:

  • Increased power handling capability.
  • Improved reliability during high-performance driving.
  • Enhanced engine response and throttle response.

Tuning Your WRX

Tuning is a critical aspect of maximizing your WRX’s performance after upgrades. Proper tuning ensures that your engine runs efficiently and safely. Here are some tuning options:

  • ECU Remapping: Adjust the engine control unit for optimal performance.
  • Dyno Tuning: Use a dynamometer to fine-tune engine parameters.
  • Fuel Mapping: Ensure the right air-fuel mixture for enhanced performance.

Choosing a Tuner

Selecting an experienced tuner is crucial for achieving the best results. Consider the following when choosing a tuner:

  • Look for tuners with experience in WRX modifications.
  • Check reviews and testimonials from other WRX owners.
  • Ensure they use modern tuning equipment and software.

Conclusion

Upgrading your WRX built engine for track days requires careful consideration of camshafts, internals, and tuning. By implementing these upgrades, you can significantly enhance your vehicle’s performance, ensuring an exhilarating and reliable track experience. Always consult with professionals and do thorough research to make informed decisions about your upgrades.