Real-world Testing: 150 Hp Gains with the Cobb Flexfuel Kit on a Subaru Wrx

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The Subaru WRX has long been celebrated for its performance and tuning potential. With the introduction of the COBB FlexFuel Kit, enthusiasts are now able to unlock even more power from their vehicles. This article explores the real-world testing that demonstrates a remarkable 150 horsepower gain when using the COBB FlexFuel Kit on a Subaru WRX.

Understanding the COBB FlexFuel Kit

The COBB FlexFuel Kit is designed to allow Subaru WRX owners to run both gasoline and ethanol blends, providing greater flexibility in fuel choices. Ethanol, specifically E85, has a higher octane rating than standard gasoline, which allows for more aggressive tuning and increased horsepower.

Key Features of the COBB FlexFuel Kit

  • Compatibility with various fuel types: E85, gasoline, and any blend in between.
  • Real-time fuel composition sensing for optimal tuning.
  • Enhanced performance with improved ignition timing and fuel delivery.
  • Easy installation with comprehensive instructions and support.

Real-World Testing Methodology

To test the performance gains from the COBB FlexFuel Kit, a modified Subaru WRX was put through a series of controlled tests. The vehicle was equipped with a standard ECU tune and then retested after the installation of the FlexFuel Kit. The following parameters were recorded:

  • Baseline horsepower on gasoline.
  • Horsepower with E85 after installation of the FlexFuel Kit.
  • Torque measurements for both fuel types.
  • Track performance times, including quarter-mile and 0-60 mph.

Results of the Testing

The results of the testing were impressive, showcasing a significant increase in horsepower and torque. Below are the findings:

  • Baseline horsepower on gasoline: 300 HP.
  • Horsepower with E85: 450 HP.
  • Torque increase from 300 lb-ft to 400 lb-ft.
  • Quarter-mile time improved from 12.5 seconds to 11.0 seconds.

Benefits of Using the COBB FlexFuel Kit

In addition to the significant power gains, there are several other benefits to using the COBB FlexFuel Kit:

  • Improved throttle response and overall drivability.
  • Flexibility to switch between fuel types based on availability and cost.
  • Enhanced tuning capabilities for performance enthusiasts.
  • Support from COBB’s extensive tuning community and resources.

Potential Drawbacks

While the COBB FlexFuel Kit offers numerous advantages, it is essential to consider potential drawbacks:

  • Availability of E85 fuel may be limited in some regions.
  • Increased fuel consumption when running on E85 due to lower energy content.
  • Possible need for additional modifications to fully realize power gains.

Conclusion

The COBB FlexFuel Kit represents a significant advancement for Subaru WRX enthusiasts looking to maximize their vehicle’s performance. With real-world testing showing gains of up to 150 horsepower, the kit offers a compelling option for those seeking enhanced power and flexibility in fuel choice. Whether on the track or the street, the COBB FlexFuel Kit is a worthy investment for serious performance enthusiasts.