Apologies if this is an incredibly daft question, patience is requested
I'm running an E40 mix (no flex fuel). Me being from Scotland E85 and Ethanol was never really a thing so it's my first time using it. I want to be able to read my fuelling when data logging and wanted something cleared up.
On my last WOT (3rd gear) MHD read AFR's of 12.0. I've been on a deep dive today trying to answer this. Am I correct in saying the O2 sensors read in lambda, and convert that lambda reading to a gasoline output? If so, would I need to do the following to get the actual AFR when using E40:
- A reading of 12 for gas is a lambda of 0.8163 (12/14.7). So the sensor is reading a lambda of 0.8163 then converting it to gas on MHD(?)
- E40 stoic is: 12.4 and 10.7 for WOT (according to the internet, which we know is never wrong )
- That's means if the O2 sensors are reading a lambda of 0.8163 and giving a gas output of 12 on the gauge, then for the E40 AFR I need to take the sensors lambda reading of 0.8163 and multiply the E40 stoic of 12.4 by it to get my my correct reading, which is 10.1?
Or am I overthinking this / don't actually understand what I'm talking about?
I'm running an E40 mix (no flex fuel). Me being from Scotland E85 and Ethanol was never really a thing so it's my first time using it. I want to be able to read my fuelling when data logging and wanted something cleared up.
On my last WOT (3rd gear) MHD read AFR's of 12.0. I've been on a deep dive today trying to answer this. Am I correct in saying the O2 sensors read in lambda, and convert that lambda reading to a gasoline output? If so, would I need to do the following to get the actual AFR when using E40:
- A reading of 12 for gas is a lambda of 0.8163 (12/14.7). So the sensor is reading a lambda of 0.8163 then converting it to gas on MHD(?)
- E40 stoic is: 12.4 and 10.7 for WOT (according to the internet, which we know is never wrong )
- That's means if the O2 sensors are reading a lambda of 0.8163 and giving a gas output of 12 on the gauge, then for the E40 AFR I need to take the sensors lambda reading of 0.8163 and multiply the E40 stoic of 12.4 by it to get my my correct reading, which is 10.1?
Or am I overthinking this / don't actually understand what I'm talking about?
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