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Thread: Tuning the transient parameters

  1. #1
    Lifetime Member hquick's Avatar
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    Default Tuning the transient parameters

    Ok guys....couldn't wait any longer so I decided to make some adjustments to my B9000 table before heading home from work.
    I upped the 90 & 100 kpa columns by 10%. After a little driving I noticed a small decrease in the lean tip-in spike so I pulled over and raised it another 10%.
    Another drive and then another 5% as well as lifting the 80 & 70 rows 5%.
    If there's still any lean tip in...it's negligible....but being the perfectionist (addict ) I am....I'll keep working on it.
    Howard

    YOU ONLY NEED TWO TOOLS IN LIFE - WD-40 AND DUCT TAPE. IF IT DOESN'T
    MOVE AND SHOULD, USE THE WD-40. IF IT SHOULDN'T MOVE AND DOES, USE THE
    DUCT TAPE.
    IF YOU CAN'T FIX IT WITH A HAMMER, YOU'VE GOT AN ELECTRICAL PROBLEM.


    98 K1500 'HOLDEN' Suburban.
    Custom Whipple SC, Mercruiser Marine intake, 0411 PCM, 4L80E w/shift kit

  2. #2
    Lifetime Member 5.7ute's Avatar
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    Thats good news. Any relationship with the BENS & the amount you needed to modify the table? (Just thinking ahead for the roadrunner.)
    The Tremor at AIR

  3. #3
    Lifetime Member hquick's Avatar
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    No idea Mick . Lol!
    I'm sending you my tune and logs....you can take a peek.
    Howard

    YOU ONLY NEED TWO TOOLS IN LIFE - WD-40 AND DUCT TAPE. IF IT DOESN'T
    MOVE AND SHOULD, USE THE WD-40. IF IT SHOULDN'T MOVE AND DOES, USE THE
    DUCT TAPE.
    IF YOU CAN'T FIX IT WITH A HAMMER, YOU'VE GOT AN ELECTRICAL PROBLEM.


    98 K1500 'HOLDEN' Suburban.
    Custom Whipple SC, Mercruiser Marine intake, 0411 PCM, 4L80E w/shift kit

  4. #4
    Lifetime Member 5.7ute's Avatar
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    No worries. I will have a look tomorrow after I upgrade the work PC.
    The Tremor at AIR

  5. #5
    Lifetime Member Aloicious's Avatar
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    Quote Originally Posted by hquick View Post
    Ok guys....couldn't wait any longer so I decided to make some adjustments to my B9000 table before heading home from work.
    I upped the 90 & 100 kpa columns by 10%. After a little driving I noticed a small decrease in the lean tip-in spike so I pulled over and raised it another 10%.
    Another drive and then another 5% as well as lifting the 80 & 70 rows 5%.
    If there's still any lean tip in...it's negligible....but being the perfectionist (addict ) I am....I'll keep working on it.
    GREAT! I'm stoked, I'm going to try this out as well. I have the lean tip in as well as a slight rich decel issue I'd like to try working on with this (wall wetting table I'm thinking) as nothing else seems to fix it.

    Howard, did you leave all the other calibration values the same as the initial file? (i.e. you only altered the b9000 by increasing the column values, no other tables?) I'd be interested in seeing your tune once you iron it out.

    good job!
    1996 c1500 gen1e 5.7L - the "LS31", 24x CNP, LS2 coils, modified T56, 12200411PCM running COS3, zz4 cam, custom MPFI, etc. coming soon: Twin Turbos

  6. #6
    Lifetime Member hquick's Avatar
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    Send me your email address and I'll send it to you right now.
    I had rich decel also..and it's gone.
    I still need to do alot of testing and tuning. This was a 'rough' test....but seemed to head the right direction.
    Howard

    YOU ONLY NEED TWO TOOLS IN LIFE - WD-40 AND DUCT TAPE. IF IT DOESN'T
    MOVE AND SHOULD, USE THE WD-40. IF IT SHOULDN'T MOVE AND DOES, USE THE
    DUCT TAPE.
    IF YOU CAN'T FIX IT WITH A HAMMER, YOU'VE GOT AN ELECTRICAL PROBLEM.


    98 K1500 'HOLDEN' Suburban.
    Custom Whipple SC, Mercruiser Marine intake, 0411 PCM, 4L80E w/shift kit

  7. #7
    Lifetime Member Aloicious's Avatar
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    Quote Originally Posted by hquick View Post
    Send me your email address and I'll send it to you right now.
    I had rich decel also..and it's gone.
    I still need to do alot of testing and tuning. This was a 'rough' test....but seemed to head the right direction.
    I'll PM you. did you adjust the wall wetting tables for the rich decel?

    EDIT- I see b9000 IS a wall wetting table. DUH. I thought it was under the throttle stop section. how did you work on the rich decel problem you had?
    Last edited by Aloicious; September 25th, 2008 at 06:43 PM.
    1996 c1500 gen1e 5.7L - the "LS31", 24x CNP, LS2 coils, modified T56, 12200411PCM running COS3, zz4 cam, custom MPFI, etc. coming soon: Twin Turbos

  8. #8
    Lifetime Member hquick's Avatar
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    Rich decel went away with the lean tip in.
    Howard

    YOU ONLY NEED TWO TOOLS IN LIFE - WD-40 AND DUCT TAPE. IF IT DOESN'T
    MOVE AND SHOULD, USE THE WD-40. IF IT SHOULDN'T MOVE AND DOES, USE THE
    DUCT TAPE.
    IF YOU CAN'T FIX IT WITH A HAMMER, YOU'VE GOT AN ELECTRICAL PROBLEM.


    98 K1500 'HOLDEN' Suburban.
    Custom Whipple SC, Mercruiser Marine intake, 0411 PCM, 4L80E w/shift kit

  9. #9
    Lifetime Member hquick's Avatar
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    Current log and tune
    Howard

    YOU ONLY NEED TWO TOOLS IN LIFE - WD-40 AND DUCT TAPE. IF IT DOESN'T
    MOVE AND SHOULD, USE THE WD-40. IF IT SHOULDN'T MOVE AND DOES, USE THE
    DUCT TAPE.
    IF YOU CAN'T FIX IT WITH A HAMMER, YOU'VE GOT AN ELECTRICAL PROBLEM.


    98 K1500 'HOLDEN' Suburban.
    Custom Whipple SC, Mercruiser Marine intake, 0411 PCM, 4L80E w/shift kit

  10. #10
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    First off For getting these going! HQuick, I made an ~30% increase to the 80+ kPa columns, and 10% everywhere else. Still some fine tuning to do, very happy with the results so far.

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