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Thread: 03 5.9 CR 48re

  1. #21
    ok so here a log from tonight, i didn't tonight the shifter had dropped (i think my bracket for the shift cable needs adjustment) must have touched the tv lever.

    anyway if you jump to 17:11:33 i got on it and it stumbled, in tune v4 i added more fuel and pushed up rail psi a touch. the stutter didn't change much if any i may try some other tunes i have but when i hit it hard the boost limit fueling dropped then came back. with that said would it be a good idea to raise up the boost limit table where it comes in? other than that it droves nice pulls great, egt's went up a bit due to the fuel but i will go back to v3 tomorrow.

    Attachment 106333Attachment 106334

  2. #22
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    Try reducing pilot timing, the 03-04 trucks don?t like extra fueling with how the aggressive the pilot timing is.

  3. #23
    definitely helped, i pulled back some torque as well seemed to drive nice, good egt's very clean


    Attachment 106363Attachment 106364
    2010 F-350 03 5.9/848ecm, built 5R110, 30% over sticks, 10mm pump, 64mm Stealth Turbo
    2008 F-350 03 5.9
    Fumminstuning.com

  4. #24
    ok so i ended up changing my base fueling to come in 100% and 2000 rpm and up, also torque limit 1800 and up. i think my stutter was rail psi not being there when i hit it. i ran it this morning and works very nice still clean and i added some more fuel up top and let the boost limiter out some more in the mid-range. this tune drives nice egts 1250+ on the hammer so i will cap the fuel there i think.

    i made a few more timing changes based off a calculator but have not ran them yet. for now, this will be my daily tune overall very happy thank you again Jim

    Attachment 106465
    2010 F-350 03 5.9/848ecm, built 5R110, 30% over sticks, 10mm pump, 64mm Stealth Turbo
    2008 F-350 03 5.9
    Fumminstuning.com

  5. #25
    i'm still working on a decent steet tune and keep landing back on the engine stutter, one day i think i have it next day its back.

    today it was -15/-16 and the truck will not stutter so i think my timing correction maps are the problem, the stutter is never there on hard accel from a stop or an easy roll into it only happen while at cruise and hammer it.

    i looked and compared a bunch of files and if my theory is right it would be when the timing is being multiplied not zeroed out. looking for a logical step to take and not guess. yesterday i had this truck in the shop all day for a fuel sender etc and the truck being warm it stuttered on the way home. keep in mind its in a ford body and the intake filter is in the engine bay. so i think staring with iat timing correction is a good place to start.

    in my logs i have not been able to get any info just the engine drops before it takes off, it does puff some smoke when it des it as well.

    last tuneAttachment 106940

    any input is appreciated
    2010 F-350 03 5.9/848ecm, built 5R110, 30% over sticks, 10mm pump, 64mm Stealth Turbo
    2008 F-350 03 5.9
    Fumminstuning.com

  6. #26
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    The correction tables are NOT always active, FYI. Think of them as conditional tables. As an example, the 04.5-2007 5.9L, for main timing it is set as ?max wins?, this means the ECM compares the selected air density table against the correction tables with their associated multiplier tables applied to it, and whichever has the highest timing value for the given rpm and fuel load, that becomes the active timing table used. The ECM does NOT blend the correction tables with the air density tables.

    The ECM can be set to different handlings of how it selects which tables to use through user defined parameters, provided you have the address locations of those parameters.
    Last edited by Jim P; 01-28-2021 at 09:43 AM.

  7. #27
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    If I remember correctly the 03-04 ECM?s are set with main timing as max wins and with pilot timing as min wins.

  8. #28
    ok that helps thank you, i do not have user-defined (yet) if do where would i get the files to load? and what happens i disable these or zero them all out? cold air today made it work very well
    2010 F-350 03 5.9/848ecm, built 5R110, 30% over sticks, 10mm pump, 64mm Stealth Turbo
    2008 F-350 03 5.9
    Fumminstuning.com

  9. #29
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    What?s kinda sounding like is at lower rpms with heavy load applied is when the issue is coming in, this correct?

  10. #30
    i would say 1500 rpms and then full throttle it will do it, ease in and it's fine or today it was fine as well
    2010 F-350 03 5.9/848ecm, built 5R110, 30% over sticks, 10mm pump, 64mm Stealth Turbo
    2008 F-350 03 5.9
    Fumminstuning.com

  11. #31
    so i made some changes yesterday in these maps, the truck came to life more than it ever has. so far no stutter and very responsive low egts etc.

    what do you think made the most difference? torque map was 1000 rpm up set at 2k, part throttle gov was left alone and on (also hard it off with no change) and all speen gov was moved up.
    to me i think the IAT and boost Correction made the engine happy.

    any feedback is appreciated

    tune file and screen shot of changesAttachment 106959Attachment 106960
    2010 F-350 03 5.9/848ecm, built 5R110, 30% over sticks, 10mm pump, 64mm Stealth Turbo
    2008 F-350 03 5.9
    Fumminstuning.com

  12. #32
    so i have been playing with this and when i think its better it's just the conditions are not correct, i made some small changes today and ran a log. the actual and desired look odd to me?

    this is when i hit it hard got a few stutters/smoke and it took off, here's a screenshot of that moment what do you guys think?

    Attachment 107199
    2010 F-350 03 5.9/848ecm, built 5R110, 30% over sticks, 10mm pump, 64mm Stealth Turbo
    2008 F-350 03 5.9
    Fumminstuning.com

  13. #33
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    Don?t use the channels list to see the PID values for things like rail pressure or timing, use what it says in the charts. The values in the charts are cut off but the rail pressure commanded and actual don?t look too far off from each other at the point in time you have the cursor at. Looks like just under 630psi difference to me. An undesirable difference but not the difference that the channels view is showing.
    Last edited by Jim P; 02-06-2021 at 03:58 PM.

  14. #34
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    Curious, do you have your logged channels offset from each other in the graph view? It looks like your actual rail pressure is always above your commanded.

  15. #35
    ok the first reply i see it's just the refresh rate that just caught my eye

    the second don't 100% follow, I do see at times coming into TPS on that pic above a big difference in rail vs actual/desired can be different by a lot, one part on that tip in this shows 3000 (actual lower)
    this driveline I used is 430km i wonder if the pump is tired or if I should push max psi up (160 now)
    2010 F-350 03 5.9/848ecm, built 5R110, 30% over sticks, 10mm pump, 64mm Stealth Turbo
    2008 F-350 03 5.9
    Fumminstuning.com

  16. #36
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    Rail pressure on a health pump with proper PID control should be no more than 300psi, plus or minus.

  17. #37
    on these older ones sci/sae don't recall what is what but I think it's just the refresh rate here.
    if the roads stay dry here I'll go back through this today and see, maybe new filters to be safe this week as well
    2010 F-350 03 5.9/848ecm, built 5R110, 30% over sticks, 10mm pump, 64mm Stealth Turbo
    2008 F-350 03 5.9
    Fumminstuning.com

  18. #38
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    SCI.

    Your actual rail pressure is always showing above commanded, look at the graph view of the picture you posted, that?s not refresh rate related.

  19. #39
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    Whatever is going on with your rail pressure, I?m sure once it gets resolved and actual actually stays with commanded very tightly, you?ll notice an improvement in how the engine behaves and runs.

  20. #40
    yes i see that now, adjusted the display finally could be a tired pump that has been in the back of my mind for a while now. the cp3 runs off the factory ford lift pump could be why the difference as well

    swaps haha but this is a decent daily that works well etc, if I roll into to it a bit slower it's fine, dead stop fine (spins the tires) so it's down to where we draw the line here I guess
    2010 F-350 03 5.9/848ecm, built 5R110, 30% over sticks, 10mm pump, 64mm Stealth Turbo
    2008 F-350 03 5.9
    Fumminstuning.com