Not your typical FICM Tuner Q&A - Ford Powerstroke Diesel Forum
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Old 08-23-2013, 01:13 PM
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Not your typical FICM Tuner Q&A

Well this is not your typical FICM tuner vs PCM tuner. I have researched a lot on the subject. First I want to list the things I do know, and then maybe someone can fill me in on the things I dont' know.

Things I do know:
  • Huge increase over stock tuning
  • Slight increase if you already have a big PCM tune (SCT Tune)
  • Inscrease throttle response
  • Dyno proven to increase power
  • Raises egts significantly
  • cannot tune anything except the FICM (not tranny, turbo, etc...)
  • Has the possibility of increasing fuel mileage
  • Some report smoother idle

This link to the gopowerhungry website has a ton of info and is good for reference. It shows dyno graphs, talks about how Ford reprogrammed many trucks and made the trucks slowy, run worse, and get bad fuel mileage. It shows many different combos of how it increases power over stock.
Power Hungry Performance - FICM Reprogramming


Things I don't know:
  • What exactly a FICM tuner does
  • What parameters a FICM tuner can adjust
  • Does a FICM tuner adjust the pulse width
  • How exactly it changes the power


What I have been able to research so far is just he results of FICM tuning, not the cause for the results. I would like to know exactly what it is doing to the FICM that an SCT tuner can't do???


These questions have come about because I have been looking into injectors, nozzles, pulse width, tuning, timing, cylinder pressure etc. I have also had the injectors apart and I was surprised as to how simple they are. What I mean by that is there is not too much that affects the fuel except the pulse width and hpop pressure (fuel pressure and nozzles affect it but are not part of my thoughts) so what exactly can a ficm tuner adjust to make things different? Is it simply making the pulse width longer, faster, harder??? which in effect advances timing, which when combined with stock nozzles and an extreme tune it sounds pretty dangerous. These questions might sound dumb and that is because I am not educated on the subject and have not been able to find the right info to edumacate my self.

Last edited by peixinho; 08-23-2013 at 03:00 PM.
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Old 08-23-2013, 01:52 PM
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More good sites but don't quite answer my questions yet

HUGE gains from FICM ONLY tune! - PowerStrokeArmy

PowerStrokeArmy - View Single Post - HUGE gains from FICM ONLY tune!
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Old 08-23-2013, 02:17 PM
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Call Gearhead. They are very popular with the 6.0

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Old 08-23-2013, 02:36 PM
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Ummmm gearhead doesnt tune FICMs ---- going there nets him, well, nothing.
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Old 08-23-2013, 02:47 PM
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Quote:
Originally Posted by white59rt View Post
Ummmm gearhead doesnt tune FICMs ---- going there nets him, well, nothing.
So you think Matt or Larz doesn't know anything about it???

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Old 08-23-2013, 02:55 PM
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Quote:
Originally Posted by peixinho View Post
I would like to know exactly what it is doing to the PCM that an SCT tuner can't do???
Uhm...I'm pretty sure it is doing it to the FICM and not the PCM. That's why you can run a SCT tune along with the FICM tune.

What exactly it does I can't say. I don't know enough about the logic board in the FICM.
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Old 08-23-2013, 02:56 PM
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Originally Posted by hucorey View Post
So you think Matt or Larz doesn't know anything about it???

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I didnt say that - I would just ask the guys who do the actual tuning he will get more info that way. I mean I would never ask the guy who fuels the planes to rebuild the turbofan but he may know something about them.

For the record I hear good things about Matt but have never even seen him comment on FICM tuning.

Either way OP good luck.
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Old 08-23-2013, 03:02 PM
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Quote:
Originally Posted by PGreenSVT View Post
Uhm...I'm pretty sure it is doing it to the FICM and not the PCM. That's why you can run a SCT tune along with the FICM tune.

What exactly it does I can't say. I don't know enough about the logic board in the FICM.

Thanks I edited it for the typo.

I don't know what it does either... thats what I am trying to figure out. I understand what PCM (SCT) tuners do but I don't understand and can't find a source that talks about FICM tuners
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Old 08-23-2013, 03:03 PM
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I will ask Matt... he is pretty good about answering my emails and all my questions
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Old 08-23-2013, 03:06 PM
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If a tuner can open the pulse width on a 175/stock injector enough to dump all the fuel... even to the point that people have talked about possibly increasing cylinder pressure past a safe point then that shows that an SCT tuner has the ability to dump as much fuel as is needed. Which leads to my questions as to what the FICM tuner does that an SCT tuner doesn't???

Maybe it can open it slightly farther than the sct tunes. But if you can open them past the safe point then why would you need a tuner to open them farther? Maybe it does it more efficiently... but how?
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