Results 1 to 4 of 4

Thread: Another e54 question

  1. #1
    Junior Member
    Join Date
    Apr 2016
    Posts
    19

    Default Another e54 question

    First time I have seen this and it happens to be on my own personal vehicle. I always have to do a full flash. Sometimes all the values don't get transferred with just a cal flash. Example. I put the idle timing at -15 just to prove my theory. Truck white smokes like a train while idling. Then I change my timing tables back to normal. Do a cal flash. Truck smokes like crazy. Read the tune. Says correct numbers. Do a full flash and it's fine. I've tested this number out times making real obvious changes. Changing defuel to 10mm. Adding a lope tune. Different things like this. Only a full flash guarantees I get all my changes flashed. Why is this. It's so annoying. Never had this happen before.

  2. #2
    Lifetime Member THEFERMANATOR's Avatar
    Join Date
    Mar 2009
    Posts
    794

    Default

    DSP2, DSP5, or single tune? I've had this problem ALOT on LLY's, only a few times on my LB7, and just about ALL teh time on my AL5 TCM. What's weird though is if I do the cal flash via my V2, It seems to go through all the time, do the cal flash in pass through, and it's a crap shoot.
    1995 GMC 2500 SUBURBAN powered by 01 DURAMAX/ALLISON, little of this, a little of that,
    DIAMONDEYE 4" exhaust, CORSA muffler, AFE stage 1 dry filter, custom tuning by me, KENNEDY single pump and pump rub kit.

  3. #3
    Junior Member
    Join Date
    Apr 2016
    Posts
    19

    Default

    Dsp5. weird you say that about the al5. I've never had any issues whatsoever with the al5. I just did another e54 last night and didn't have the problem. Guess it's just my own vehicles. Haha

  4. #4
    Forum tyhee Site Admin GMPX's Avatar
    Join Date
    Apr 2003
    Posts
    13,119

    Default

    Just a note from the DSP tutorials.....

    IMPORTANT
    For the LB7, any time you are retuning any of the DSP Programs #2 - #4 you will need to perform a full flash of the ECM for the changes to be applied,
    Program #1 changes can be programmed using just a calibration flash.


Similar Threads

  1. E54 Issues Again
    By WisconsinHick1 in forum Duramax LB7
    Replies: 3
    Last Post: May 31st, 2016, 04:35 AM
  2. Lb7 help e54
    By TravisF in forum Duramax LB7
    Replies: 5
    Last Post: April 17th, 2016, 10:22 PM
  3. Replies: 2
    Last Post: April 28th, 2015, 01:25 AM
  4. Desired Airflow Question, not your normal question
    By Dale in forum General (Petrol, Gas, Ethanol)
    Replies: 25
    Last Post: October 1st, 2010, 10:10 AM
  5. Locked out timing question for boost setup question??
    By nitrorocket in forum General (Petrol, Gas, Ethanol)
    Replies: 13
    Last Post: September 13th, 2005, 02:22 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •