DPF soot % question - Ford Powerstroke Diesel Forum
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post #1 of 9 Old 07-01-2014, 05:24 PM Thread Starter
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DPF soot % question

I loaded some new PID's into Torque and am monitoring DPF soot percentage, and soot grams/liter.

Very shortly, within 1/4 mile of an active regen completing, I noted the following:

Soot %: 29.1
Soot G/L: 0.5

After driving 40 miles of mixed highway/city driving, my readings are:

Soot %: 74.3
Soot G/L: 1.3


As I understand it, an active regen happens when the soot G/L reaches 2.6 or so.

What happens when the % gets to 100%? As shown above my % is at 74.3 but the G/L is only at 1.3.

Thanks!
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post #2 of 9 Old 07-02-2014, 01:42 PM
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Bump. I'm curious about this too.

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post #3 of 9 Old 07-03-2014, 03:39 AM Thread Starter
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Only had about 120 miles since last active regen.

Watching Torque this morning on the way to work and my Soot % was at 100.5% and Soot G/L was at 1.7. Within a few seconds "Cleaning Exhaust Filter" appeared.

Post-DPF exhaust temps got as high as 1185*F. Even after the active regen completed (based on the instant fuel economy) the EGT stayed around 800* for at least 5 minutes.

After this regen my soot % was 17.1% and G/L is 0.3.

The difference between the last regen was I shut the truck off very shortly after the regen completed. This time I was still driving for another 10 minutes which helped lower the %.


So I don't know what the difference between the soot % and soot g/l is if the active regen can start even at 1.7 G/L.

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post #4 of 9 Old 07-03-2014, 01:33 PM Thread Starter
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Here's a good explanation of soot % and g/l:

Torque Pro App - Ford 6.7L Extended PIDs - Diesel Forum - TheDieselStop.com

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post #5 of 9 Old 07-03-2014, 08:39 PM
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Daystrom, I'm just starting to get Torque configured and am struggling with getting PIDs to work. I've seen how to import the predefined set, but most of those seem to be wrong based off info I saw in another forum. How did you setup your PIDs for things like Soot?
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post #6 of 9 Old 07-04-2014, 08:50 AM
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When load hits 100% your mileage goes to **** and the truck doesn't regen. I found mine would regen more based on distance traveled rather then actual dpf conditions.

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post #7 of 9 Old 07-05-2014, 01:37 AM
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You might want to check your soot equations. I use the following:
Soot Mass (g/L):
((A*256)+B)*(100/65535)
Soot Mass %:
(((A*256)+B)*(100/65535)-1.16)*62.5

The % equation assumes that a regen will start at 2.68 g/L and 0% soot is 1.16g/L. I came up with these values from the guys with the edge cts's, based on what they were seeing before and after their regens. My truck usually only gets down to 1.3 g/L after a regen.

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post #8 of 9 Old 07-05-2014, 01:47 AM
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Is this what you have installed on the truck?

ATS Torque Pro 2000 Ford Propane Injection System
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post #9 of 9 Old 07-07-2014, 03:57 PM
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Nope, he is using an app for android called Torque Pro:

https://play.google.com/store/apps/d...l.torque&hl=en

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