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Torque Pro app questions

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I searched the Interwebs and the developer's site with no luck... so I'm asking here.
In the Torque Pro app there is a standard PID I added which simply reads "DPF Pressure" and is identified as measuring PSI. This thing measures up over 1000 at WOT.
It's not the ExhPres PID. This one maxes at around 4 and is normally in the .4-1.0 range, so I figure this is the exhaust differential pressure.
What the heck is that DPF pressure reading??
Also, cruising unloaded between 65 and 70 for ~30 mins what would you expect EGT 1 and EGT 2 to be reading? I'm hoping what I saw was a regen in progress, as I was 1170 and 1000 deg F, respectively.

I gotta find the PID for rail pressure somewhere :)
 
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Not sure what your tool is reading or what the scale is but the first exhaust pressure sensor is in the t/stat housing that measures exhaust manifold pressure (drive pressure)
 
Additionally, Temp Sensor #1 will give you a temp near the turbo. Temp sensors #2 & 3 will give you a better idea of DPF temps.
 
Not sure where the sensor is, as there's no indication of the PID number or anything.
Cruising along on flat land it's in the low double digits. Notice the red mark showing max... could blow a gasket like that :)
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I got torque pro set up in my 10" tablet and talking to the OBDII dongle. Put up gauges for all 4 EGT B1 data points. I am curious where in the exhaust system (from exh manifold to post scr) these data points are coming from.
 
I believe, For aftertreatment temp sensors... temp 1 should be DOC inlet temp, temp 2 should be DPF inlet (or DOC outlet, depending how you like to look at it and/or your troubleshooting manual likes to call it), temp 3 is DPF outlet temp. If you are looking at exhaust differential psi, you are looking at the difference in backpressures between the inlet and outlet of your DPF. This number is used as an indicator to the ecm as to how much soot load is in the DPF filter and is used for determining when regens are needed.
You also should have 2 more temp sensors for SCR inlet and outlet temps. I'm not sure what temps you are looking at if you are seeing 1100 and 1000 degrees though ... DOC inlet temp should not really exceed 700 to 800 degrees in my experience, but if you were looking at DPF inlet/outlet or SCR inlet/outlet temps, those numbers would make sense during a regen event.
 
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