Boost Controllers for Subaru Wrx: Achieving 350+ Hp with the Cobb Accessport and Boost Control

The Subaru WRX is a beloved vehicle among car enthusiasts, known for its performance and tuning potential. One of the key components in maximizing the horsepower of your WRX is the boost controller. In this article, we will explore how to achieve over 350 horsepower using the Cobb Accessport and boost control strategies.

Understanding Boost Control

Boost control is essential for tuning turbocharged engines like the Subaru WRX. It regulates the amount of boost pressure produced by the turbocharger, directly impacting engine performance. Effective boost control can lead to significant power gains and improved throttle response.

Choosing the Right Boost Controller

When selecting a boost controller for your WRX, consider the following options:

  • Manual Boost Controllers (MBC)
  • Electronic Boost Controllers (EBC)

Manual Boost Controllers (MBC)

MBCs are simple devices that allow you to adjust boost levels mechanically. They are generally more affordable and straightforward to install. However, they lack the precision of electronic controllers.

Electronic Boost Controllers (EBC)

EBCs offer advanced features such as programmable boost levels and the ability to adjust boost on-the-fly. They connect to your vehicle’s ECU and can provide more consistent performance compared to MBCs.

The Cobb Accessport: An Essential Tool

The Cobb Accessport is a powerful tuning device that allows you to modify your WRX’s engine parameters easily. It provides a user-friendly interface for adjusting boost levels, fuel maps, and other critical settings.

Benefits of Using the Cobb Accessport

  • Preloaded maps for various modifications
  • Real-time data monitoring
  • Easy installation and removal

Achieving 350+ HP: Step-by-Step Guide

To achieve over 350 horsepower in your Subaru WRX, follow these steps:

  • Upgrade your turbocharger for increased airflow.
  • Install a high-flow fuel pump and injectors.
  • Choose a quality intercooler to reduce intake temperatures.
  • Use the Cobb Accessport to upload a performance map.
  • Set boost levels using your chosen boost controller.

Step 1: Turbocharger Upgrade

Upgrading to a larger turbocharger will significantly increase the amount of air entering the engine, allowing for more power. Popular options include the Garrett GTX series or the BorgWarner EFR series.

Step 2: Fuel System Enhancements

A high-flow fuel pump is crucial for delivering the necessary fuel to support increased horsepower. Pairing it with larger fuel injectors ensures that your engine receives the right air-fuel mixture.

Step 3: Intercooler Installation

Installing a larger intercooler helps maintain optimal intake temperatures, increasing efficiency and preventing knock. Look for options specifically designed for the WRX.

Step 4: Using the Cobb Accessport

Once your hardware upgrades are complete, use the Cobb Accessport to upload a performance map tailored to your modifications. This ensures that your engine runs smoothly and efficiently.

Step 5: Boost Control Setup

Finally, set your desired boost levels using your boost controller. Monitor your vehicle’s performance and make adjustments as necessary to ensure reliability and performance.

Monitoring Performance and Tuning

After achieving your horsepower goals, continuous monitoring is essential. Use the Cobb Accessport to keep an eye on critical parameters such as:

  • Boost pressure
  • Air-fuel ratio
  • Engine temperature

Conclusion

Boost controllers are vital for unlocking the potential of your Subaru WRX. By combining a quality boost controller with the Cobb Accessport and essential upgrades, you can achieve over 350 horsepower and enjoy a thrilling driving experience.