Pids and EFILive Pro
Re: Pids and EFILive Pro There are duplicates, it does not really matter which you choose. The main differences that you should take into account are:
How many channels are used by the PID. Less channels means you can select more PIDs.
For example the SAE O2S11 PIDs use 2 channels, the GM HO2S11 PIDs use 1 channel - so use the GM ones.
The SAE PIDs that are duplicates of GM PIDs may have very small differences to their GM counterparts. That is usually because the SAE PIDs are "converted" by the PCM to the "SAE specified scaling". This conversion may result in small rounding discrepancies.
For the TP PID it is probably more useful to look at the {GM.TPS} (Volts) rather than the "sanitised" {SAE.TP} (Percentage). The sensor's voltage provides more useful information.
Note also that the GM LTFT PIDs are average fuel trim - the SAE LTFT PIDs are actual fuel trim so it is better to use the SAE LTFT PIDs
Regards
Paul
How many channels are used by the PID. Less channels means you can select more PIDs.
For example the SAE O2S11 PIDs use 2 channels, the GM HO2S11 PIDs use 1 channel - so use the GM ones.
The SAE PIDs that are duplicates of GM PIDs may have very small differences to their GM counterparts. That is usually because the SAE PIDs are "converted" by the PCM to the "SAE specified scaling". This conversion may result in small rounding discrepancies.
For the TP PID it is probably more useful to look at the {GM.TPS} (Volts) rather than the "sanitised" {SAE.TP} (Percentage). The sensor's voltage provides more useful information.
Note also that the GM LTFT PIDs are average fuel trim - the SAE LTFT PIDs are actual fuel trim so it is better to use the SAE LTFT PIDs
Regards
Paul
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Joined: Jul 2002
Posts: 2,261
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Re: Pids and EFILive Pro
There are duplicates, it does not really matter which you choose. The main differences that you should take into account are:
How many channels are used by the PID. Less channels means you can select more PIDs.
For example the SAE O2S11 PIDs use 2 channels, the GM HO2S11 PIDs use 1 channel - so use the GM ones.
The SAE PIDs that are duplicates of GM PIDs may have very small differences to their GM counterparts. That is usually because the SAE PIDs are "converted" by the PCM to the "SAE specified scaling". This conversion may result in small rounding discrepancies.
For the TP PID it is probably more useful to look at the {GM.TPS} (Volts) rather than the "sanitised" {SAE.TP} (Percentage). The sensor's voltage provides more useful information.
Note also that the GM LTFT PIDs are average fuel trim - the SAE LTFT PIDs are actual fuel trim so it is better to use the SAE LTFT PIDs
Regards
Paul
How many channels are used by the PID. Less channels means you can select more PIDs.
For example the SAE O2S11 PIDs use 2 channels, the GM HO2S11 PIDs use 1 channel - so use the GM ones.
The SAE PIDs that are duplicates of GM PIDs may have very small differences to their GM counterparts. That is usually because the SAE PIDs are "converted" by the PCM to the "SAE specified scaling". This conversion may result in small rounding discrepancies.
For the TP PID it is probably more useful to look at the {GM.TPS} (Volts) rather than the "sanitised" {SAE.TP} (Percentage). The sensor's voltage provides more useful information.
Note also that the GM LTFT PIDs are average fuel trim - the SAE LTFT PIDs are actual fuel trim so it is better to use the SAE LTFT PIDs
Regards
Paul
