Zeitronix ECA-2 Ethanol Content Analyzer Kit w/ E% Gauge (ECA-2-KIT)

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Fits Your:
FREE Delivery Expected by , when ordered within hrs and mins
Gauge Type
Optional Flex Fuel Sensor
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ECA-2 Ethanol Content Analyzer Kit by Zeitronix

Now you can test your ethanol % to make sure it's what is being advertised. Many times (especially in early spring) fuel stations will advertise E85 but its really only around E70, and this can lead to multiple problems when tuning or racing your E85 fueled vehicle.

This Zeitronic Ethanol Analyzer kit does exactly that. It's installed as part of your fuel system and monitors the ethanol content of the fuel before it enters your engine. This can be evermore handy when tuning to a wide range of ethanol content levels, making this a tool that will pay for itself just in just a few weeks!


  • Two 0-5 V analog outputs: Ethanol % and Fuel Temperature for use with ECUs, data logging and engine management systems.
  • Error indication in event of signal absence from Flex Fuel Sensor
  • The 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 a piece of Velcro or double sided tape.
  • The gauge base allows the gauge to be mounted in a standard 2” 1/16 (52mm) gauge pod.
  • Power and serial data is supplied directly through the single connection - there are no additional +12V or ground wires. The gauge cable length is 5 ft (1.5m).
  • ECA-2 dimensions: 3" x 2" x 1" (76mm x 50mm x 25mm)
  • Made in the USA!
  • Connecting harness and Zeitronix Flow Through FLEX Fuel Sensor is optional. Harness length is 8 ft (2.4m)


  • Universal


  • Range: 0 to 100% Alcohol (ethanol)
  • Sensor Accuracy: 5% of the mix ratio
  • Output Characteristic: Linear
  • Operating Temp: Environment -40°C to +125°C, Fuel -40°C to +90°C
  • Max Fuel Pressure: 10 bar (145 psi)
  • Max Pressure Drop: 0.1 bar (1.45 psi)
  • Max Flow: 200 l/h
  • Supply Voltage: 6-18 Volts DC
  • Sensor Temp Error: < 1.5%
  • Response Time: < 250 ms after power on at any temperature

What's in the Box?

  • 1 - ECA-2 Ethanol Content Analyzer
  • Choice of E% Gauge Display or Dual Ethanol % and Fuel Temperature Display
  • OPTIONAL 1 - Flow Through Flex Fuel Sensor with Harness


  • Zeitronix Manufacturer Warranty

Customer Reviews

Based on 6 reviews
Flex fuel kit

Flex fuel is the way to go if you daily drive your baby lol
Great shipping, installation was easy, what takes longer is just routing your gauge cable but other then that its pretty easy and simple

Flex fuel kit

Havent gotten the chance to install this yet, but really like the quality and the gauge, installation looks easy and simple thanks MAP

Andre Mjolsness
Great product

Great quality and easy to install will be purchasing more gauges in the near future

Excellent for my e85 system

All accessories came in package are complete with everything that you’ll need. MAP’s etune will compliment this perfectly

Nic Meyer
Excellent for converting to flex fuel

I installed this on my 04 WRX in about 2 hours, it was very easy to install. The kit is very high quality. This kit is perfect if you are converting your car to flex fuel, it comes with provisions to send a 0-5v signal to your ECU which allows you or your tuner to do flex fuel tuning.

And as always, excellent service and shipping time from MAPerformance.