DIY Mini-Dash LCD Gauges Update #2 - New Layout & Multiple Screens!

Originally Posted by 14Q60awdSPORT

I believe it is a GM/continental sensor that is hooked up to a Zeitronix ECA-2 the flex fuel sensor wire is wired into PIN 102 from the ECU which normally controls something in the EVAP system but the signal is hijacked and repurposed for the ethanol content reading.

I can display the ethanol % on my phone with the Ecutek connect app connecting my phone to the Ecutek OBD bluetooth, so it is getting the reading from the OBD only I guess it knows to translate the EVAP signal reading as the ethanol %.

It wouldn't be impossible to convert it to or add Bluetooth but I'd prefer to avoid this if possible.


Another question or suggestion, Is it possible to change the "gauge display type" IE just have it display a number instead of also having a "Sweeping" gauge. In order to have it take up less screen space and possibly allow for a few more gauges to be displayed.

For example on my phone I have 12 "gauges" but only 6 of them are sweeping like bank 1 and 2 AFR, avg AFR, target AFR and bank 1 and 2 STFT. Then I have another 6 that are just a digital number for things that do not change rapidly like ethanol %, trans temp, oil temp, coolant temp, bank 1 and 2 LTFT.

Things with frequent rapid changes the sweeping gauge style is nice because it can help view the number easier at a glance like boost or AFR. but other things that you just need to occasionally monitor slowly overtime like oil and trans temps a smaller number without the sweeping gauges is perfectly suitable.

3-4 sweeping style and 3-4 only numerical style would be nice. Can easily fit 2 numerical only in the same space as 1 sweeping style.

in a perfect world id probably have 3 sweeping gauges for, avg AFR, boost, and maybe fuel pressure, and then just a number for oil temp, trans temp, ethanol %.