Page 1 of 2 12 LastLast
Results 1 to 10 of 15

Thread: update lb7 OS?

  1. #1
    Member SGFastMax's Avatar
    Join Date
    Apr 2009
    Posts
    90

    Default update lb7 OS?

    is it possible to flash an 03 or 04 OS onto an 02 lb7 ecm?

  2. #2
    Lifetime Member THEFERMANATOR's Avatar
    Join Date
    Mar 2009
    Posts
    800

    Default

    Yes, but why? The 6006 02 is about as good as it gets and has pretty much the same detail in all the data fields as the 044 03-04 OS.
    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
    Member SGFastMax's Avatar
    Join Date
    Apr 2009
    Posts
    90

    Default

    i see i just compared files and no egr and rev limiter in the 01 file. otherwise their the same.

  4. #4
    Lifetime Member THEFERMANATOR's Avatar
    Join Date
    Mar 2009
    Posts
    800

    Default

    01 has a rev limiter in it as well, but is worked into different tables from the factory. Anything an 01 can do, an 02+ can do plus more. I switched back to an 01 in my BURB simply because I wanted the 850 fast idle, but the driveability of the 01 is nowhere near as nice as the 02 was.
    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.

  5. #5
    Member SGFastMax's Avatar
    Join Date
    Apr 2009
    Posts
    90

    Default

    is the 02 7100 OS better than the 6006 OS?no egr in the 7100.

  6. #6
    Lifetime Member THEFERMANATOR's Avatar
    Join Date
    Mar 2009
    Posts
    800

    Default

    Quote Originally Posted by SGFastMax View Post
    is the 02 7100 OS better than the 6006 OS?no egr in the 7100.
    It is an early 02 OS that some have said even made it into 01's as well. It is pretty crude by design and has all the same basic detail as an 01. Even though they have a spot in the OS for an EGR, it doesn't meen that it is used or even activated. MOST LB7's don't have an EGR valve on them, so it isn't activated in it. I'm getting ready to go back to a 6006 OS as the 01 OS has a funky feel to the pedal off idle.
    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.

  7. #7
    Member SGFastMax's Avatar
    Join Date
    Apr 2009
    Posts
    90

    Default

    i know exactly what you mean, i did some tuning on an 01 rescently and noticed the weird feel in the throttle. also the 01 had rough shifts when it was stock before i touched it and i noticed in table b0741 in the 7100 os isnt defueling like the tables in the newer os's are.

  8. #8
    Senior Member JustinD's Avatar
    Join Date
    Jul 2009
    Posts
    110

    Default

    I have an 01 with the 3376 OS, should I update it? What would I gain?
    2001 Chevrolet K2500HD Duramax
    Suncoast SCIV 1056
    Kennedy twin lift pumps
    Billet pick up
    MBRP 4" exhaust
    Air intake horn mod
    ARP head studs
    A few more go fast/truck pulling goodies!
    Tuned with EFI
    12.65 @ 107 1.71 60'

  9. #9
    Lifetime Member THEFERMANATOR's Avatar
    Join Date
    Mar 2009
    Posts
    800

    Default

    Quote Originally Posted by JustinD View Post
    I have an 01 with the 3376 OS, should I update it? What would I gain?
    The main improvements will be driveability, more detailed tuning tables, some added tables, and less wierd unexplaineable quirks. I went back to the 01 8873 for about 2 weeks before I got tired of random plumes of black smoke when moderately accelerating, and just all around poor driveability before I went back to the 6006 02 OS. The difference is night and day between the 2 for driveability. The only real drawback is you will lose the 850 fast idle option that only the 01 OS has in it. The 02+ will have a 680 idle VS the 600 of the 01, but I can send you the script to bring the idle back down to 600 like the 01's have.
    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.

  10. #10
    New Member
    Join Date
    Jun 2010
    Posts
    7

    Default

    Where can I find these OS files???
    I know what you mean about off idle and smoke plumes now and then and i also get a loppy idle off throttle now and then but it clears up in about 5 seconds.
    Thanks.
    Jeff
    2001 GMC 2500HD Duramax Allison, 4x4 ex-cab, 8' bed, 285/75R16, Sulastic rear spring shackles, Cognito upper control arm kit, Cognito Heavy Duty Tie-Rods, Cognito pitman and idler arm support kit, Heavy duty sway bar end link kit, Banks air cleaner kit with super scoop, AirDog 150 Fuel Preporator/Filter, EFI Live Tuning for power and fuel milage...

Page 1 of 2 12 LastLast

Similar Threads

  1. To update or not to update?
    By jorge in forum General (Petrol, Gas, Ethanol)
    Replies: 3
    Last Post: September 17th, 2008, 03:23 AM
  2. LBZ / LMM Update soon
    By GMPX in forum Duramax 06 LLY / 06+ LBZ & LMM
    Replies: 13
    Last Post: September 20th, 2007, 07:26 PM
  3. V7.3 update
    By GMPX in forum General (Petrol, Gas, Ethanol)
    Replies: 24
    Last Post: September 21st, 2005, 09:11 AM

Posting Permissions

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