Zeitronix ECA-2 Ethanol Content Analyzer with Flex Fuel Sensor & Dual Gauge Red

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Zeitronix ECA-2 Ethanol Content Analyzer with Flex Fuel Sensor & Dual Gauge Red

Zeitronix Ethanol Content Analyzer ( ECA-2 ) Plus Flex Fuel Sensor and Gauge


  • Zeitronix ECA-2
  • Zeitronix flex fuel sensor and connecting harness
  • Zeitronix Dual Ethanol Percentage (%) and Fuel Temperature gauge, red digits


  • Two 0-5 V analog outputs: Ethanol % and Fuel Temperature for use with ECUs, data logging and engine management systems
  • Ethanol Percentage, 0-5 Volts, 0% to 100%
  • Fuel Temperature, 0-5 Volts, -40 to 125 °C (-40 to 257 °F)
  • Connecting harness to Zeitronix Flow Through Flex Fuel Sensor is included
  • ECA-2 dimensions: 3" x 2" x 1" (76mm x 50mm x 25mm)
  • Zeitronix Flow Through Flex Fuel Sensor: both tubes are 0.37" and 0.5" at the flange.
  • Made in the USA!

Dual Ethanol Percentage and Fuel Temperature Gauge

This gauge is only 3/4" (19mm) thick. The back of the gauge is completely flat with cable hidden in a cavity and can be surface mounted almost anywhere inside the car cabin using double sided tape. The gauge base allows the gauge to be mounted in a standard 2” 1/16 (52mm) gauge pod. For additional mounting options the package includes 2 set screws and 2 nuts (4-40 screw size). The gauge plugs into the ECA-2 GAUGE port. Fuel Temperature Gauge shows Celsius and Fahrenheit.  Power and serial data is supplied directly through the single connection - there are no additional +12 Volt or ground wires. The gauge cable length is 5 foot (1.5m).

What's your ethanol percentage? The ethanol content of E85 fuel can vary from 60% to 92% ethanol. A fill up with E85 can drastically change the mix of fuel in your vehicle. For performance drivers determining actual ethanol content of E85 is essential to maximizing an engine tune and horsepower.

Why know your ethanol percentage? E85 has the equivalent octane rating of 105 octane gasoline. Higher octane fuel is more resistant to knock allowing for more aggressive ignition timing, higher compression and increased engine power over gasoline itself. The Zeitronix Ethanol Content Analyzer helps you get the most out of your engine and fuel.

Ethanol Content Analyzer ECA-2 Analog Outputs: Ethanol content and temperature analog outputs are available as part of the ECA-2. The flex fuel sensor does not provide these outputs. Zeitronix has created the ECA-2 to provide these outputs making use of E-85 easier with after market engine control modules and data logging systems.

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