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UCON Flex Advanced Engine Management System

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

Page 14 of 86
  1. Jul 14, 2017 at 9:47 AM
    #261
    Murphinator

    #261
    Murphinator Well-Known Member

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    That seems insane to me. I really hope it works out for you, so much trouble with your truck and ecus. :annoyed:
     
    Murphinator, Jul 14, 2017
    #261
    loginfailed[QUOTED] and gersus like this.
  2. Jul 14, 2017 at 11:19 AM
    #262
    loginfailed

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    loginfailed Well-Known Member

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    Its not as bad as it sounds. Used ECUs are only $150-$200 on eBay depending on the day. I already have a Drewtech Mongoose. Programming an ECU only costs me $55 for a 48-hour Techstream subscription.
     
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    loginfailed, Jul 14, 2017
    #262
    stevotivo12, Torspd, PapaBear and 1 other person like this.
  3. Jul 14, 2017 at 11:31 AM
    #263
    jojotoo

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    jojotoo Well-Known Member

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    I'm doing the same ..

    Bought an ecu from eBay for stock calibration.
     
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    jojotoo, Jul 14, 2017
    #263
    loginfailed likes this.
  4. Jul 14, 2017 at 11:43 AM
    #264
    gersus

    #264
    gersus Well-Known Member

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    Lil lift, bumpers, SC, UCON, headers, etc.
    gersus, Jul 14, 2017
    #264
    loginfailed likes this.
  5. Jul 14, 2017 at 1:29 PM
    #265
    loginfailed

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    loginfailed Well-Known Member

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    Technically, you don't need a cable. Only a paper clip.

    But you don't know what calibration is in there without some sort of tool to read the calibration ID.

    What if the one you buy on eBay had a TRD flash or some poor sap that had a BullyDog flash? I mean there are tons more non-supercharged than supercharged. So odds are in your favor you'll get an NA version. But I have the sort of luck so I want to see the calibration ID with my own eyes before I call it good.
     
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    loginfailed, Jul 14, 2017
    #265
    gersus[QUOTED], Roostfactor, jojotoo and 1 other person like this.
  6. Jul 14, 2017 at 2:28 PM
    #266
    gersus

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    gersus Well-Known Member

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    Lil lift, bumpers, SC, UCON, headers, etc.
    True
     
    gersus, Jul 14, 2017
    #266
  7. Jul 15, 2017 at 11:57 AM
    #267
    s10nick

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    s10nick Well-Known Member

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    Subed
     
    s10nick, Jul 15, 2017
    #267
  8. Jul 15, 2017 at 3:58 PM
    #268
    jojotoo

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    jojotoo Well-Known Member

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    Headers , cam gear and thermostat installed. Verified spare ecu N/A calibration file.

    Time to schedule a session with gadget to reprogram the ucon for N/A ecu.
     
    jojotoo, Jul 15, 2017
    #268
    Torspd, Roostfactor and loginfailed like this.
  9. Jul 16, 2017 at 9:22 AM
    #269
    s10nick

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    s10nick Well-Known Member

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    How big of a pita were the headers to install?
     
    s10nick, Jul 16, 2017
    #269
  10. Jul 16, 2017 at 9:40 AM
    #270
    jojotoo

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    jojotoo Well-Known Member

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    my friend at Toyota did all the work for practically free. He said it wasn't that big of a deal. Only issue I had was the passenger side o2 sensor not reaching even the upper bung. Ordered extension harness yesterday and will move them to the collector.

    I'm happy with them .. not much louder more of a deeper tone. Stock y with trd exhaust.
     
    jojotoo, Jul 16, 2017
    #270
    SonnyBones likes this.
  11. Jul 16, 2017 at 11:43 AM
    #271
    Roostfactor

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    Roostfactor Well-Known Member

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    It's not too bad. The biggest headache is the secondary injection setup on the 2012+ models.
     
    Roostfactor, Jul 16, 2017
    #271
    gersus likes this.
  12. Jul 16, 2017 at 12:42 PM
    #272
    SonnyBones

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    SonnyBones I VOID WARRANTIES

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    Any CEL light after the header installation? Heard folks were getting them with the URD Spec headers since they eliminated the cats. O2 sims provided weren't working or something like that.
     
    SonnyBones, Jul 16, 2017
    #272
  13. Jul 16, 2017 at 12:46 PM
    #273
    Torspd

    #273
    Torspd Tor-nication

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    Going to be a nice bumping power with those components.
     
    Torspd, Jul 16, 2017
    #273
    loginfailed likes this.
  14. Jul 16, 2017 at 12:47 PM
    #274
    Roostfactor

    #274
    Roostfactor Well-Known Member

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    I would still occasionally get a cel with the o2 SIM installed. Not really a big deal, I would just clear the code and press on.
     
    Roostfactor, Jul 16, 2017
    #274
    loginfailed likes this.
  15. Jul 16, 2017 at 12:49 PM
    #275
    Torspd

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    Torspd Tor-nication

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    And your sim is installed in the proper fashion? Per the description page?
     
    Torspd, Jul 16, 2017
    #275
  16. Jul 16, 2017 at 12:51 PM
    #276
    Roostfactor

    #276
    Roostfactor Well-Known Member

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    It sure was. Even swapped with Gadget for a second o2 SIM. Still happened just not as frequently. It's now removed since the UCON handles all that.
     
    Roostfactor, Jul 16, 2017
    #276
    oni06 and loginfailed like this.
  17. Jul 16, 2017 at 12:55 PM
    #277
    Torspd

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    Torspd Tor-nication

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    I bet the UCON will handle it better.

    I remember there being a slight signal change from the 2012 plus models, or something of that nature being brought up as the reason why the O2 Sim was hit-or-miss.
     
    Torspd, Jul 16, 2017
    #277
    Roostfactor and loginfailed like this.
  18. Jul 16, 2017 at 12:58 PM
    #278
    s10nick

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    s10nick Well-Known Member

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    Yeah I spoke with gadget and he said not to run the sims with the ucon. Not sure as to why? Im waiting to install the headers untill I get the o2 extensions. Did you guys need a new gasket for the block side?
     
    s10nick, Jul 16, 2017
    #278
    loginfailed likes this.
  19. Jul 16, 2017 at 1:37 PM
    #279
    FinnJ

    #279
    FinnJ Well-Known Member

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    And a BIG headache is rusted nuts/studs. Remember to change them to stainless ones and lubricate well (ceramic paste), otherwise removing the Spec-U headers might be impossible job.

    I changed the nuts to ARP ones. The best tool to tighten them is this (size 10):
    [​IMG]
     
    FinnJ, Jul 16, 2017
    #279
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  20. Jul 16, 2017 at 2:49 PM
    #280
    jojotoo

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    jojotoo Well-Known Member

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    well.. my passenger side o2 is not connected, yet... extension harness should be here soon. Its throwing a P0031. Im assuming itll be cleared once i connect it.
     
    jojotoo, Jul 16, 2017
    #280
Page 14 of 86

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