Sotf tuning

[onebigburb]

I have recently heard there is sotf tunning avail. On 6.4l? I was under impression that only 6.0l had this? Did I miss something?

[projectlnf]

i believe for the Ford application it is just the 6.0 through HPT.

[badcoupe]

It’s available on sct I know but don’t think so on 6.4

[onebigburb]

Well there is some companys saying they offer sotf tunes for 6.4 and 6.7...so where does this leave us? Lol

[projectlnf]

I?m decided lol

Who does it for the 6.7? Ezlynk?

[Powerstrokecustoms]

you can do it with hpt, ezlynk, sct,. pretty much anything but its not the same as what hpt has for 6.0 platform..

[Powerstrokecustoms]

its a scam.. its not a true sotf.. its using the torque output to limit the power from using fuel temp or cac temp.. 6.4, 6.7 all the same way..

[onebigburb]

Most sotf are done by the torque limit from what i have seen in the past. I understand that part. What I am not understanding is without adding a controller how would the ecm be able to store the info? Like changing some bit to a potentiometer? Pm sent with link

[projectlnf]

There is a potentiometer hooked up in line with a sensor (typically the FUEL TEMP sensor).

The fuel temp sensor is either scaled so the ?switch? will tell the ecm hey I?m at 32* let?s bump timing or fuel (which ever way it works) that would be your performance tune.

Same goes for reverse.. ?switch? is set for 0 and the ecm sees HIGH fuel temps so it backs timing or fuel down.

This is the basic way of looking at it. None of these numbers are accurate btw. But that is my understanding

[onebigburb]

Ahhhh.... i see what you did there!

[Powerstrokecustoms]

https://www.youtube.com/watch?v=ZMchkWL1VDw

[projectlnf]

Post above! That?s your answer! I have never done it for the 6.4 or the 6.7 so I was just under the impression that?s how it worked.

6.0 with enough trial and error you can get the trans to shift pretty smooth. I have a file I used to run that was about damn near perfect. But I spent almost a year refining it little by little

[onebigburb]

THANK YOU! That clears that up! I will say that makes me want to get some tunes from you powerstroke. I juat cant justify it under an ever evolving project at this time.

[Nicobang]

From my understanding:
CAC & FTS SOTF switches are basically a volume control of the channel (tune)
you are currently flashed to.
That being said, I think I understand now why some people do not care for them.
Your making small, but potentially "undesirable" changes to the way the tune was specifically wrote to perform.
If this is the case, in the event that somebody is running a SOTF tune, what would be the best 1-5 setting on the switch to keep said tune as close to "desirable" as possible?
On my 2017 6.7 PS position (5) puts me at .5v at idle. I feel this is as close to "normal" voltage if you were to not have SOTF switch installed. Is this correct or will the specific switch position always provide its own parameters to which voltage is delivered.

I.E:
Without SOTF (.5 - 5.0v) +/-
And with SOTF the switch position would adjust resistance to a specific minimum or maximum voltage

Is this a basic understanding or do i need to go smash my head on a rock until knowledge is achieved?

[dieselpitstop]

The switch is basically creating 5 different temperatures. the truck will see the temp and will only allow a certain amount of torque output per temp setting. doesnt change timing or anything else. so basically, your go pedal does the same thing.