AEM's Flex Fuel Ethanol Content Sensor Kit measures a vehicle's fuel ethanol content percentage and fuel temperature, giving users with programmable engine management systems the data needed to optimize tuning calibration for the actual fuel blend in the tank. Pump-labeled E85 often varies significantly from its stated blend, so this sensor lets tuners determine the real ethanol content in real time.
Specifications:
- Measures ethanol content percentage and fuel temperature
- Brass body with fluid-impervious sealing
- Weather-resistant connector and pins included
- Accuracy: within 3% margin of error
- Analog data scaled in charts
- Part Number: 30-2200
Installation Instructions
FAQ
Why does actual ethanol content differ from the pump label?
Fuel sold as E85 can vary widely from the labeled 85% ethanol blend depending on season and supplier, so a flex fuel sensor is needed to read the true content for accurate tuning.
What does this sensor measure?
The AEM Flex Fuel Sensor Kit measures both ethanol content percentage and fuel temperature in a single inline unit.
What kind of engine management system does this require?
A programmable engine management system capable of flex fuel tuning is required to use the sensor's output to adjust fuel and timing calibration.

