E85 / Flex-Fuel Ethanol Content Sensor

E85 / Flex-Fuel Ethanol Content Sensor
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E85 / Flex-Fuel Ethanol Content Sensor

Ethanol content sensor for use with Hondata systems when E85 fuel is being used. E85 fuel varies greatly on ethanol content from one fueling station to the next. On vehicles running E85 fuel, this causes lots of problems as the ethanol content of the fuel plays a significant role in the tuning needs. By installing an enthanol content sensor, you can monitor ethanol level content and use this information to apply changes to your tune.

The sensor should be installed in the fuel return line. Ideally, after the fuel pressure regulator in the return line to the fuel tank.


HA Motorsports Ethanol Sensor Plug-n-Play Harness for Hondata S300
Make installation of an ethanol/flex-fuel sensor easy with the HA Motorsports custom assembled ethanol sensor wire harness. This harness has a built in 2.4k Ohm resistor and 8 feet of wire for easy connection to your S300V3 analog input connector.