Do you passive regen at all when just daily driving it at high speed with the EGTs hot enough? Wait for it... senix will comment on how the Unicorn never regens when he tows...

 

Not to my knowedge. I have never noticed my DPF % drop down at all while driving. I just added the DPF Soot Load % to my Derringer screen, so I will be able to monitor it more closely now. I have had quite a few regens initiate off of mileage though. I just figured it was attributed to a new DPF and the use of the FBC.

 

Okay keep us posted. I would think you would with your use of FBC. How long have you been using the FBC? I've probably asked you that before.

 

I can't remember exactly when I placed my first order. Some time around 6-7 months ago is my best guess. I can tell you that I ordered the two pack of 16 oz. bottles though, and I've only got half a bottle left...so I've used 24 oz. so far. I want to say that I started using it right around the time they replaced my DPF. Glad you brought up that question...because I am headed to place another order of it as we speak!

 

I'm on the fence to try it. I wonder if it would help with when I do more city driving then usual. Bobcat says he usually always has 500 mile regens with most of it being stop and go driving. His soot load remains low also.

 

The videos that have been done with it have been pretty fascinating. I don't have anything to compare it to before, but I am happy with it after reading other testimonials, and having my own regens kicked on by the computer.

 

Yes, yes...EGT 14 needs to be in the 800F to work well and keep it at zero % soot load. But the minute I unhook that puppy will regen in a few miles.

 

My last regen I tried locking out 6th. I did notice the EGTs increased. I was only going 55 mph at the time. From what I understand through some research the increase in oxygen brought in by higher engine speeds may contribute to a better burn with the extra dose of fuel during active regen. I assume this is possible since not all the oxygen may be used during combustion which allows some to enter the exhaust stream. This may be wrong but makes some sense to me.

 

I don't agree.... If this was true then why does Ford raise the rpm's when performing a manual regen. If rpms is irrelevant to the effectiveness of heating the dpf, then they would have done it a normal idle rpm. But they don't! Having said that I'm sure there's a point where increasing rpms doesn't make the regen process more efficient since since there's a maximum temperature that the regen process occurs.

 

So, what RPM does the talking head inthe video do the stationary regen? The only screenshot of the tach shows engine at idle.
The trouble with youtube videos is the same as TV...........talking heads could do in 5 seconds if they would just shut up and do.

Neither@Just Strokin Larry nor I were talkking about doing any kind of regen at idle. We were speaking of whether to lock out 6th gear while driving down the highway.

 

Well, I have some interesting info today. I made a quick trip from East Texas to Fort Worth around 3 this morning, then back around noon. Right around 5 hours and 15 minutes total drive time, running 85 mph there, and around 75-80 on the way back due to traffic. I took the first pic about 20 minutes after I hit the highway so everything would be at operating temp. The second pic was taken just before I pulled into my driveway. 2 1/2 hours of driving at 85 mph and my soot load increased by 16.5%. After making the same trip back, my Soot Load was up to 63%. That is an increase of 31.2%. The only difference was me running at a little lower speed. My truck sat parked at the house until I left. No idling whatsoever. One thing I now know, is that I get no passive regen at highway speeds. I was running empty though.





Upon my return, my mileage triggered a regen since it had been 519 miles since the last. My ghost screen showed my Exhaust Filter at 90% Full. My DPF Soot Load% on the Derringer only showed 63% though. 3 miles after it went into a regen, I had to turn off the road and onto a long lease road. I kept my speed between 10-20 mph the entire way down the lease road. My Soot Load % was at 43% when I first turned onto the lease road. After 10 minutes, it was all the way down to 0.0%. Definitely saw lower temps, but you guys were right about the length of time it takes and not needing to lock out 6th gear ever again. The peculiar part is that the regen stayed active for about 20 minutes after the DPF Soot Load hit 0%. My ghost screen only showed that the Exhaust Filter came down to 60% though. Now I'm curious as to whether or not it's going to trigger another regen when my ghost screen hits 100% Full.

 

My guess is when you hit 100% on the ghost screen it will regen again.

EGT's bring on the passive regens. Likely with the speed you were running the EGT's were probably there but the soot being produced out ran the passive regens.

 

Jsukey, any hills at all, some or otherwise on that trip on the highway? Texas is fairly flat, correct? I always see soot build up some on my way in to work as altitude decreases. Like a down hill run. The way home back up I see the passive regens happening. Interesting though.

 

I never noticed temps over 650 on any of the 4 EGT sensors. I just find it odd that the Derringer now shows my Soot Load% at 0.0% while the ghost screen still shows 60%.

There are quite a few slight grades, but nothing that’s really going to give the truck a workout. I’m going to start keeping track of my Soot Load% with my regens now, so maybe we can put some ideas together down the road.

 

Passive regens can be had around 550f. But likely you were or are always producing more soot than you can passive regen due to speed and not towing.

Towing would increase egts enough to over come the soot.

Good news is you went past the mandatory regen miles.