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UCON Flex Advanced Engine Management System

Discussion in 'Performance and Tuning' started by gray223, Jul 5, 2014.

Page 27 of 86
  1. Aug 8, 2017 at 10:49 AM
    #521
    Skootter14

    #521
    Skootter14 Upon my signal, unleash Hell

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    . . ... ? haha
     
    Skootter14, Aug 8, 2017
    #521
    loginfailed[QUOTED] likes this.
  2. Aug 8, 2017 at 11:03 AM
    #522
    GT7

    #522
    GT7 One piece at a time

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    Dont hold back the details
     
    GT7, Aug 8, 2017
    #522
    loginfailed[QUOTED] and jojotoo like this.
  3. Aug 8, 2017 at 2:30 PM
    #523
    loginfailed

    #523
    loginfailed Well-Known Member

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    Dwayne
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    Not a major problem. Might be an automatic transmission only issue, not sure. Still trying to figure out how to reliably duplicate. Part throttle acceleration when cold, accelerating, the AFR is around 12-13 and it suddenly jumps to 15. Feels like it momentarily loses power but it's like a split second. It's during a shift. Could be just my truck.

    My laptop was having issues so I haven't been able to data log it yet.

    If anyone has Windows 10 do not update to 1703 "creators update". Mine stopped being able to datalog after the update. I put windows 7 on it and it's working good now.
     
    Last edited: Aug 8, 2017
    loginfailed, Aug 8, 2017
    #523
    jojotoo and Skootter14[QUOTED] like this.
  4. Aug 8, 2017 at 3:43 PM
    #524
    XPOTRPR

    #524
    XPOTRPR CNC Programmer/Machinist

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    > BUILD LINKS >
    The loss of power feeling during shifts will be solved by an IPT Valve Body Upgrade... Trust me.
     
    XPOTRPR, Aug 8, 2017
    #524
    loginfailed, oni06 and GT7 like this.
  5. Aug 8, 2017 at 3:45 PM
    #525
    GT7

    #525
    GT7 One piece at a time

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    I swear I felt something similar
     
    GT7, Aug 8, 2017
    #525
    loginfailed[QUOTED] and oni06 like this.
  6. Aug 8, 2017 at 4:23 PM
    #526
    loginfailed

    #526
    loginfailed Well-Known Member

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    I just duplicated it.

    2517 RPM
    Throttle position 21%
    Pedal position 34%
    Coolant temp 184
    Intake air temp 102
    Vehicle speed 56 MPH
    Trans was shifting from I think 3rd to 4th

    AFR according to UCON went to 18. Maybe it is something to do with Toyota ECU logic for the transmission. Not a huge deal but it is startling when it happens.

    Other than that it runs fantastic.
     
    loginfailed, Aug 8, 2017
    #526
  7. Aug 8, 2017 at 4:24 PM
    #527
    loginfailed

    #527
    loginfailed Well-Known Member

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    I'm sure that will help overall, but this was actual fuel cut judging by AFR.
     
    loginfailed, Aug 8, 2017
    #527
    Roostfactor likes this.
  8. Aug 9, 2017 at 7:18 AM
    #528
    Skootter14

    #528
    Skootter14 Upon my signal, unleash Hell

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    What exactly happens? (I must have missed it if you mentioned it already somewhere)
     
    Skootter14, Aug 9, 2017
    #528
  9. Aug 9, 2017 at 8:52 AM
    #529
    loginfailed

    #529
    loginfailed Well-Known Member

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    It loses power momentarily when shifting into 4th at lower throttle positions. Before, I thought it only did it when not fully warmed up. But it happened today at full operating temp.

    Possible it's a trans issue, but the AFR gauges go lean when it happens. Like a fuel cut.
     
    loginfailed, Aug 9, 2017
    #529
  10. Aug 9, 2017 at 9:05 AM
    #530
    Skootter14

    #530
    Skootter14 Upon my signal, unleash Hell

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    "a lot of stupid stuff" -Wife
    ohhhh ok, gotcha. Thanks. Hopefully its something that can be worked out through the ucon/programming/wizardry.
     
    Skootter14, Aug 9, 2017
    #530
  11. Aug 10, 2017 at 12:49 PM
    #531
    GT7

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    GT7 One piece at a time

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    Getting with scott Saturday morning, Im excited. Hopefully its good because the truck will be going 2500 km the next day
     
    GT7, Aug 10, 2017
    #531
    jojotoo and loginfailed like this.
  12. Aug 10, 2017 at 1:12 PM
    #532
    Billy182

    #532
    Billy182 Well-Known Member

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    2013 X-Runner build thread: https://www.tacomaworld.com/threads/billy182s-2013-x-runner-build.829354/
    Hey guys, I'm new on this forum, mostly over on XRU, My truck is a 2013. I'm hoping to hear from Scott tonight and get it installed. No 219 codes here, but the tailpipe is sooty. Ultraguage shows LTFT's both sides up to 29, but I guess that's what the UCON is showing the stock ECU. I've got Thorley long tubes, a 2.7 and a 7th injector. Unfortunately I just got the bung welded into the Y pipe for an AFR gauge, so I can't tell what's really going on yet. I'll keep everyone posted on how it works out once Scott installs the update
     
    Billy182, Aug 10, 2017
    #532
    Roostfactor, jojotoo and loginfailed like this.
  13. Aug 10, 2017 at 2:56 PM
    #533
    loginfailed

    #533
    loginfailed Well-Known Member

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    I don't know what everyone else's experience has been like, but my truck runs WAY better since the update. Prior to that I pretty much avoided boost because it dumped so much fuel in. It felt slower in boost than out of boost. Now I can just mash the gas at any time and go. It's still a bit richer than I would have hoped for, but greatly improved.
     
    loginfailed, Aug 10, 2017
    #533
    Roostfactor, nfs257, Skootter14 and 2 others like this.
  14. Aug 10, 2017 at 3:00 PM
    #534
    GT7

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    GT7 One piece at a time

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    Music to my ears. Your truck sounds exactly like mine
     
    GT7, Aug 10, 2017
    #534
    Roostfactor, jojotoo and loginfailed[QUOTED] like this.
  15. Aug 10, 2017 at 3:20 PM
    #535
    jojotoo

    #535
    jojotoo Well-Known Member

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    im just waiting for scott to confirm a date/time.
    So.. im probably going to do a valve body upgrade before i add the 2.5 pulley and the 7th injector.
    Im dreading the down time......
     
    jojotoo, Aug 10, 2017
    #535
    Roostfactor and loginfailed like this.
  16. Aug 10, 2017 at 3:34 PM
    #536
    loginfailed

    #536
    loginfailed Well-Known Member

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    Too bad they don't offer an exchange service. Order it, swap it out, return the core.
     
    loginfailed, Aug 10, 2017
    #536
    Roostfactor and oni06 like this.
  17. Aug 10, 2017 at 3:34 PM
    #537
    oni06

    #537
    oni06 Well-Known Member

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    Also waiting for Scott to get back to me on scheduling a time.
     
    oni06, Aug 10, 2017
    #537
    Roostfactor, jojotoo and loginfailed like this.
  18. Aug 10, 2017 at 3:36 PM
    #538
    loginfailed

    #538
    loginfailed Well-Known Member

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    Scott's hours for remote sessions are evenings and weekends, if I'm not mistaken.
     
    loginfailed, Aug 10, 2017
    #538
    jojotoo likes this.
  19. Aug 10, 2017 at 3:39 PM
    #539
    oni06

    #539
    oni06 Well-Known Member

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    Yeah I got an initial email from him. Just waiting for him to respond to my reply.

    Im pretty much open anytime within his available time.
     
    oni06, Aug 10, 2017
    #539
    jojotoo likes this.
  20. Aug 10, 2017 at 3:41 PM
    #540
    jojotoo

    #540
    jojotoo Well-Known Member

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    I'm looking for a valve body for around $200 or so .. I'll just sell mine after replacing. That's plan "a" :)
     
    jojotoo, Aug 10, 2017
    #540
    gersus, oni06 and loginfailed[QUOTED] like this.
Page 27 of 86

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