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Originally Posted by
speedricer
Right on. Yeah I have the suggested GM sensor plugged directly to the egt plug on my 92 Sentra. Enabled the IAT in the software using that as my source and the IAT reading over on the data list stays at the default. I'm assuming that's the value I should be seeing change when enabling the use of the IAT sensor at that plug source, correct?
Yes
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Originally Posted by
speedricer
So what you are saying is something needs updated software side to able to read said signal for the b13 Ecu? I'm just trying to understand what exactly would need done to use it
No, the problem is that not all ECUs have the hardware installed to enable the EGR temp input. (I don't know which ECUs do or do not have the hardware because I don't have all of the ECUs). If you enable the IAT sensor and set the INPUT to EGR TEMP INPUT, the IAT reading on the logging Data Screen will show a temperature based on the EGR temp input voltage and the IAT CONVERSION TABLE. If the ECU hardware doesn't support the EGR temp input, that value won't change. I just suggested to John that he could log the EGR temp input voltage directly without having to enable the IAT sensor.