KTuner Flex-Fuel Converter for Flex Fuel (E85) Applications. The KTuner Flex-Fuel converter is for use on KTuner Flash applications to convert an ethanol content sensor's signal into a voltage that the ECU can use for flex fuel support. Pinouts/wiring: Black - GND is ground Red - PWR is +12v switched power White - INPUT is the input from your ethanol content sensor Yellow - VOUT is the voltage output that represents ethanol content. The range is 0.5V for 0% ethanol to 4.5V for 100% ethanol. This Yellow wire is the wire that would run to the labeled ECU input used for flex fuel.
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