eFlexGauge Core is an E85 ethanol gauge that communicates via Bluetooth with the eFlexApp, giving you real‑time visibility into ethanol content, fuel temperature, and additional data directly on your mobile device.
In addition to its wireless functionality, the unit features a configurable frequency output designed for seamless integration with aftermarket ECUs. This allows you to feed accurate ethanol content and temperature data directly into engine management systems for tuning and diagnostics. Additionally, the unit provides a set point switching output for driving indicator lights, relays, and other add on components.
The highly precise ethanol content reading provided by eFlexGauge can also be used when selecting the correct calibration or tune for your ECU (e.g., platforms like HP Tuners).
Compatibility
eFlexGauge Core is compatible with any gasoline or flex‑fuel vehicle, including cars, trucks, motorcycles, boats, and more. If your vehicle does not have ethanol sensor, you have to select "Ethanol Sensor Pack" option.
At the moment, we are experiencing a high volume of orders. As a result, order processing times are currently 3-5 working days. We respond to support messages as quickly as possible. We apologise for the delay and thank you for your understanding.
Our support site answers many common questions, so we recommend checking it before contacting us.
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Need more help? Call us on 1-833-539-3835 or visit our support page to find answers and contact us via our contact form.
$199 
