COBB Subaru Flex Fuel Ethanol Sensor Kit WRX 2015-2021

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SKU 324600

A complete plug and play solution enabling users to convert their supported Subaru WRX to a Flex Fuel configuration without losing factory compensations. This is the easiest to use and most sophisticated Flex Fuel kit on the market. Utilizing OEM fuel and electronic connectors, the Ethanol Sensor Kit measures the ethanol content of fuel being fed to the motor. That data is then converted into a signal that the ECU can use for adjusting calibrations and to be displayed on a custom Accessport monitor.

Requires custom tuning. Contact DRP for a custom Flex Fuel tune.

The Flex Fuel Ethanol Sensor Kit is a requirement for converting your supported Subaru to a Flex Fuel configuration. The Ethanol Sensor Kit measures the ethanol content of fuel being fed into the motor and converts it into data that can be utilized by the car's ECU.

Requires custom tuning, contact DRP for assistance.


  • Completely Plug and Play Solution
  • Billet Aluminum Converter Case
  • OEM Quality Electrical & Fuel Line Connectors
  • Utilized by COBB Flex Fuel Tables, Retains All Factory Compensations
  • Custom DTC Error Reporting for Water in Fuel


  • 2015-2021 Subaru WRX 

This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to