The very function of the FlexFuel feature is to detect the ethanol content and adjust the calibration around it. The 2 absolutely necessary components of FlexFuel is the sensor and engine control software that is using the data from this sensor.
You CAN run E85 without FlexFuel, but its not called FlexFuel, its just called running E85. Its a separate tune, sort of like you would use for high octane race gas.
As for running stock injectors with E85, never tried it. But arent stock injectors like 310cc? Anyone know? If so, that is too small for E85.
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