Just reading a bit about the newer cummins dodge setups....

They are able to fool the truck from regen by telling the computer that the DPF is too hot, the truck is too cold, etc.

Will this work on our 6.4's ?

Can't we just trick it with a few resistors into thinking the truck is too cold to regen?

 

Don't think so. The Ford engineers have all that figured out from what I see here.

I suppose it's possible to build a box that emulates these sensors without a DPF delete tune, but it's not clear to me how to non-intrusively clear the counters that initiate a regen if a regen hasn't been performed for a while.

According to
http://www.motorcraftservice.com/vdi...BDSM902_64.pdf

Aftertreatment System Overview
The 6.4L Diesel engine utilizes a Diesel Oxidation Catalyst (DOC) and Diesel Particulate Filter (DPF) for aftertreatment
emission control. The DOC and DPF work in harmony to reduce tailpipe emissions of HC, CO, NOx and Diesel
Particulates. Diesel particulates are captured and reduced periodically by performing the necessary aftertreatment
regeneration cycle.
Comprehensive tests are performed on the analog pressure and temperature sensors. Circuit continuity checks are
performed continuously. Rationality checks are performed on the temperature sensors after an 8-hour soak by
comparing the sensor readings to ambient, and also observing temperature rise behavior immediately after start.
Rationality checks are performed on the pressure sensor at every key-on. The pressure sensor is also checked for a
stuck sensor reading during continuous operation.

DPF Functional Monitors
The DPF is monitored to ensure no leaks have developed in the substrate. Preconditioning is required for DPF
monitoring such that the distance traveled is greater than 5000 km, which allows the DPF to cycle through several
regeneration events before the monitor becomes active.
An efficiency monitor compares the restriction of the DPF to restriction values that are a function of engine volumetric
flow. A differential pressure monitor compares the measured differential pressure across the DPF to threshold values
that are a function of engine volumetric flow. Both of the monitors use a filtering routine that consist of a counter that
counts up when the measured value is below the threshold and counts up when it above the threshold. When a certain
count is reached the fault is stored.

DPF Aftertreatment Sensor Monitors
The DPF pressure sensor (DPFP) is monitored for circuit continuity and for range/performance. Range/performance
comprised two tests. One measures the sensor output at key-on, and identifies a fault if the output is not near zero. The
other measures the sensor output while the engine is running and verifies that the output changes appropriately.

 

I've been doing some major reading, and it appears that communicating through the OBDII port using a laptop costs roughly 10$-100$

$5.44 Free Ship OBD2 16Pin to DB9 Serial Port Adapter Cable - Wholesale US$5.11

Not only that, but there are a few freeware programs that will let you back up your stock file, write new , whatever you want. NO Limits whatsoever.


I'm trying to find some resources on learning the programming of the PCM, but it doesn't look like it takes much to get started, getting data like codes or live data like RPM's or sensor readings looks super easy.

 

what is the intent here.. stop regen with the DPF installed? the DPF WILL clog, and then your engine WILL shutdown. the only reason to turn off regen is because you pulled the DPF off.

Sam

 

Trust me. If it were this easy....EVERYBODY would have one of these,and tuning software would not cost what it does. That device only connects the INTERFACE to the vehicle.
There's FAR more to tuning than just plugging up to the laptop and seeing things to change.
JL

 

'Zactly! What he said...

It's deja vu, all over again... (Yogi Berra reference...anyone?!)

'Zactly! What he said...

 

I would not go this route. That dpf will clog up so fast.

 

yeh, ford thinks the filter efficiency starts to fall off after 650 miles, that is where they put the default regen if they can't read the signals from the sensors.

sam

 

No, the intent here was to go straight pipe and play with the programming.

I guess I just didn't convey that well.

I don't really want to "tune" the truck, as much as see if I can learn enough about the programming to disable the REGEN & EGR somehow. I've messed around with PC & micro-controller code a bit, and I don't think it would take much to achieve this, but we'll see.

 

If you honestly feel this way...you're in for a terribly rude awakening.
Seriously.
JL

 

Interesting idea. Just to be able to go in and shut off or delete the line for regen, scale back the egr and straight pipe it..

 

I can already seethe new thread coming...... I tried to program my own truck and now it won't start?

 

Just find the beginning of the regen subroutine, and place a jump instruction back to the main loop.

It might take more than that, and likely will

 

and read this post in the 2011 from spartan about figuring this out

https://www.ford-trucks.com/forums/1...l#post10228554

Sam

 

Nice. Posting on a public forum admitting that you're trying to hide tuners so customers can make fraudulent warranty claims
That tells me alot about their integrity and ethics.
JL