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Lead Driver
Joined: Sep 2003
Posts: 5,844
Likes: 6
From: Albuquerque
Originally Posted by Pocket
The PCM doesn't think. It doesn't magically decide that a regen is needed. Sensors in the DPF tell the PCM when a regen is necessary.
biz
Posting Guru
Joined: Jun 2006
Posts: 2,096
Likes: 0
Originally Posted by powerstroked162
The sensors are in place still, as far as the computer knows, the DPF is clean as a whistle and needs no regen to clean it out.
Cowboy Steve
Cowboy Steve
I've read others have thought the same and it hasn't turned out for them to be quite as simple as that.
Post Fiend
Joined: Jun 2004
Posts: 9,293
Likes: 10
From: Parker, CO
Originally Posted by biz4two
Exactly my point. So...what happens when the sensors are missing because the DPF has been removed and the PCM has not been flashed? The 6.4L PSD is going to have issues...
biz
biz
Lead Driver
Joined: Sep 2003
Posts: 5,844
Likes: 6
From: Albuquerque
Originally Posted by powerstroked162
The sensors are in place still, as far as the computer knows, the DPF is clean as a whistle and needs no regen to clean it out.
Cowboy Steve
Cowboy Steve
But aren't there sensors down at the DPF area? If that has been removed, then where are the sensors installed?
See...this is where pictures would really come in handy. To see the DPF removed...and the new aftermarket installed. Having the sensors still in place...etc...etc...etc.
biz
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Postmaster
Joined: Apr 2004
Posts: 3,658
Likes: 0
From: Ellensburg, Washington
When I orginally posted about my Dpf removal many asked were the BP sensors where at or if I deleted them. Like I said then, I had the exhaust shop remove the sensors from the dpf and install them into the new DPF delete pipe in the factory location as to help maintain geometry, wether it mattered or not I didnt want to chance it. With the sensors in the new delete pipe and the dpf gone I have had no issues whatsoever that would result directly from the removal of the DPF.
Cowboy Steve
Cowboy Steve
Lead Driver
Joined: Sep 2003
Posts: 5,844
Likes: 6
From: Albuquerque
Originally Posted by Pocket
I never said anything about removing sensors.
That was my intent with my previous post.
biz
Posting Guru
Joined: Jun 2006
Posts: 2,096
Likes: 0
Originally Posted by biz4two
Right. However some folks when removing the DPF would remove the sensors to...and not realize that the PCM needs those sensors to "believe" the DPF is still installed. Got to "trick" the PCM...if you will.
As its designed there should be no way simply leaving the sensors in place in the system after removing the DPF is going to trick the PCM.
AFAIK only one of the sensors measures back pressure, the others measure temperature. Others have reported what happens is that after 500-800 miles the computer initiates a drive cycle regeneration and since the DPF is gone the exhaust system does not get hot enough to shut it off.
This is why some here have been somewhat sceptical of what Powerstroked162 has been reporting.
Last edited by origcharger; Sep 5, 2007 at 08:58 AM.
Senior User
Joined: Jul 2003
Posts: 173
Likes: 0
From: central arkansas
"This is why some here have been somewhat sceptical of what Powerstroked162 has been reporting"
I wanna see pics of his truck with some of the equipment installed on it he has in his sig. Guess he cant get his pics up...
I wanna see pics of his truck with some of the equipment installed on it he has in his sig. Guess he cant get his pics up...
Hotshot
Joined: Mar 2007
Posts: 10,101
Likes: 40
From: Pa
If simply removing the DPF and transfering the sensors over to the new straight pipe works fine, it makes me wonder why companies such as SCT are going to so much trouble to come up with a program for DPF removal?
Starting a Gallery and posting pics is very simple. I added galleries for the first time ever a few weeks ago and it was very quick and easy.
Starting a Gallery and posting pics is very simple. I added galleries for the first time ever a few weeks ago and it was very quick and easy.