Stationary Desoot with AlfaOBD

[MtnRider]

Just for anyone wondering. Since my 2016 does not have a built in monitor like the 2019+ I used the torque pro app with a couple of custom PIDs to monitor the soot level and when a regen triggered. Here is a screen shot so you can get an idea of what I am talking about. When the gauge hits 100% it triggers a regen, the regen button go's green and turns to "on" and you will see the S3 EGT rise up to ~1100 degrees. When complete it shuts off and the soot gauge is usually around ~15% and the process starts over again. You can see here I was at around 28 hours and 1100 miles on this one

 

[JR]

John probably has the best data to share being he has a Smarty Touch (I think?)

I monitor with my old Scan Guage II which essentially monitors all the EGT ports. I can monitor dpf % but it's not exactly real time as it more or less plays averages on the delta. As far as I can tell its pretty accurate on the long haul but not so much short term when performing live active or stationary regens.

 

[AH64ID]

I’m using a CTS2 for now.

It does show DPF backpressure but not full percentage. Edge said that the PID for percentage was not accurate enough to make an option.

 

[Ozymandias]

Does a Regen also burn of the soot in the turbo charger/vanes?
I think so if there is 1100F at the DPF inlet sensor.

 

[AH64ID]

The EGT doesn’t spike coming out of the motor. It happens in the exhaust.

I think it takes towing EGT’s and EB actuation to clean the turbo.

 

[TFucili]

IIRC he said by dumping fuel at 40 degrees ATDC with approx 450 deg at DOC inlet, the fuel would vaporize at the DOC and spike temps to approx 1150 degrees. So the real heat is downstream. Going from memory, so YMMV.

 

[Wayne M.]

The EGT doesn’t spike coming out of the motor. It happens in the exhaust.

I think it takes towing EGT’s and EB actuation to clean the turbo.

I won’t opine on the towing part of this, but yes the EGTs soar inside the DPF, that’s the catalyst happening, turning soot into ash like a self cleaning oven.
Not all engines do a post injection event like all these small engines. Anything bigger than this use a whole other fuel/air/ignition source altogether to get the catalyst going. This is just the most economical way to get it done.

 

[AH64ID]

The process has begun. Started at .25 DPF psi.

 

[AH64ID]

Stopped at exactly 1 hour, to the second.

DPF pressure shows 0.05 now.

Gonna go drive to cool it off.

 

[AH64ID]

Here are my notes... Quite simple indeed.

I went for a run up on Bogus Basin this morning and took the truck so it would be hot when I started. Once I initiated the desoot it instantly went to 1100 rpms, maybe 1200? Never looked to be exact.

I then disconnected my OBDII Dongle and plugged my CTS2 back in.

It took 5-10 minutes for the DPF to get to 1000°. For the duration EGT1 was ±685°, EGT2&3 where ±1035°, and EGT 3&4 slowly crept up towards 950°.

I did drop the spare tire. The hottest the exhaust got by the heat shield was 475°.

The exhaust was hot enough that I singed some hair walking by at 3'.

The smell wasn't as bad as I expected.

As noted it took an hour to the second.

My fuel %age went down 3%, but it's not linear so I am not sure of the quantity of fuel used. I would guess 2-3 gallons thou.

The highest I saw the coolant was 210°, but I was spraying the radiator with water when I would see it get above 200°. I got busy and it got to 210° in 10 minutes being left alone.

I left the hood closed for most of the desoot. My theory was that with the hood closed the engine fan would direct the air thru the engine bay and out the underside of the truck to keep it cooler. With it open most the fan flow escaped the hood.

I also put a small box fan in front of the truck to help with flow... thou I can't be certain it did anything.

My CTS2 never indicated I was in regen. Maybe that's because it was unplugged when it started? Or maybe it doesn't look for a stationary one.

So that's my experience.

Now to watch and see if that reset the 24 hour regen timer.

 

[Wayne M.]

You were probably absorbed in the numbers, but did you monitor the tailpipe for smoke/ etc? That core hits a flashpoint and you’ll get a haze out the back and smells like a BBQ. Did your fan roar? The Fords must lock up 100% they make a racket!

 

[AH64ID]

You were probably absorbed in the numbers, but did you monitor the tailpipe for smoke/ etc? That core hits a flashpoint and you’ll get a haze out the back and smells like a BBQ. Did your fan roar? The Fords must lock up 100% they make a racket!

The fan did cycle, but not stay at 100%.

I did have the AC on max and floor to keep the cabin cool

No visible smoke or haze.

 

[cricha]

I have a 2017 3500Mega cab 4x4 6.7td. I would like to find out more about doing a stationary desoot. Can anyone share the info on the alfaOBD ? is it an app or a reader and app? And also any info on the Torque Pro app/reader? Web sites, anyplace I can find out how all these things work? THANKS!!

 

[AH64ID]

AlfaOBD is a PC or Android program. It requires some sort of OBDII interface. I use a PC and a WiFi adapter.

 

[Newsa]

The fan did cycle, but not stay at 100%.

I did have the AC on max and floor to keep the cabin cool

No visible smoke or haze.

I usually turn the heater on high to help vent heat from the coolant. But doesn't hurt to also have the AC on to create drag. You can hear the whistling of the turbo. My truck used to do this when it needed to if I was stopped at a red light or idling. But after a few flashes, they took that function away probably because it could be a safety concern if I was parked on dry grass or leaves

 

[cricha]

AlfaOBD is a PC or Android program. It requires some sort of OBDII interface. I use a PC and a WiFi adapter.

i did a search, just came up with Alfa Romeo stuff. Is there a web site for the alfaOBD and the Torque Pro?

 

[TFucili]

https://www.alfaobd.com/

 

[MtnRider]

Great to hear it all worked out @AH64ID. Mine was pretty straight forward as well. I should have warned you about how hot the exhaust coming out of the tail pipe was. Pretty sure I took some hair off my leg as well. Lol


.

 

[Newsa]

i did a search, just came up with Alfa Romeo stuff. Is there a web site for the alfaOBD and the Torque Pro?

Either AlfaOBD paid FCA for the proprietary PID's or one if their programmers cracked the codes. I suspect the latter because I heard that FCA has significantly increased their security to prevent tuning and other tinkering in later models of 6.7's.

You can do much more with the AlfaOBD than the Torque. App. Torque doesn't have all the PID's

 

[JR]

Aftermarket programming isn't all that obscure, if anything it's been quite slow on the Ram end. Especially as popular as they are.

I have VCDS for my 01 VW TDI, it does everything the factory diagnostics will do. I recently picked up a 12 TDI as well and have been studying the capabilities, stationary desoot and mobile desoot are one of many functions I have. Mine is a non SCR engine but there is the capability of many function tests for pump, injector, etc. for the newer DEF engines.