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Thread: Can't figure this limiter out?

  1. #1
    Lifetime Member LBZoom's Avatar
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    Default Can't figure this limiter out?

    Hello,

    Working on a 2005 LLY for a buddy of mine, he has my scantool in another state so I'm doing my best to help from afar...

    Can't figure out why this tune is being limited...I've searched and searched for 2 weeks, KillerBee suggested B0733 due to a code, as it turns out my buddy did have several codes related to turbocharger sensors...thought we struck gold so I disabled the sensors tripping the codes and still no change...possible though that he didn't do the full flash correctly...

    Here's a log prior to disabling the sensors, don't have a more current log but he says it's acting the same anyhow, I've got the MAF error allowed turned up high enough that it can't possibly be the limiter, and all limiters in the trans are disabled also, and RPM/torque limiters in the ECM are disabled, perhaps it's the CAN messages? I hadn't disabled those yet but I have now and have yet to test it again though. Here's a log and the tune... Any help is much appreciated, thanks!
    Attached Files Attached Files
    Peace Through Torque

    Punisher Performance DSP5 Tuning, PPE Dual CP3's, 68mm Fleece Cheetah, Punisher Built trans w/ Suncoast Parts, Airdog 165, SoCal 100% Overs, ARP Studs

    2013 NHRDA Sportsman World Champion

    www.PunisherPerformance.com

  2. #2
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    Look at B0748, 0749, 0750 and all of the Main Injection Pulse (no pilot) tables and I think you'll find it...
    2007 CC/SB 4WD, McRat EFI Live, Trans, Trans Cooler and C3 clutch oiling mod by Mike L., SD Sleeves, SoCal Diesel

    2002 CC/DRW 2WD, McRat EFI Live, Trans, Trans Cooler and C3 clutch oiling mod by Mike L., SoCal Diesel

  3. #3
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    You are obviously being limited by Stage 1 fuel limit. B0733

    Take a look at P0234, C0805. Clear the codes regardless of whether EFI says they are there or not. adjust these two tables.
    '07 TBSS, LS2, T42, 3SS, Black on Black on Black, Pretty much stock at the moment. EFILive will fix that

    '06 LBZ/Allison 6speed, EC, LB, 1LT, Leather
    Current Mods: EFI Live/ PTO High Idle Mod/ Factory Exhaust Brake / BD Full Bore/ TransGo Jr./ TTS Twin Lift Pumps/ MBRP 4" turbo back/ Custom air box mod/ BullyDog Outlook Monitor

    465hp/1008tq---7/25/09---Dyno Day Fast Specialties Tuning by ME

  4. #4
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    Quote Originally Posted by The Neens View Post
    Look at B0748, 0749, 0750 and all of the Main Injection Pulse (no pilot) tables and I think you'll find it...
    I always modify B0732-0736, but the reason I suggested this is that the Main Injection Pulse (with pilot) tables are modified, but the Main Injection Pulse (no pilot) tables are stock...Thought that might be causing some trouble...
    2007 CC/SB 4WD, McRat EFI Live, Trans, Trans Cooler and C3 clutch oiling mod by Mike L., SD Sleeves, SoCal Diesel

    2002 CC/DRW 2WD, McRat EFI Live, Trans, Trans Cooler and C3 clutch oiling mod by Mike L., SoCal Diesel

  5. #5
    Lifetime Member killerbee's Avatar
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    commanded vs actual boost disparity, causing underboost code and stage 1 limp. Allowable diff was 5.1 psi, actual diff was 6 psi. (20-14)
    Michael, Systems Engineer 04.5 D-max LLY, Phoenix, Arizona Email
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  6. #6
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    Figure it out or what?
    '07 TBSS, LS2, T42, 3SS, Black on Black on Black, Pretty much stock at the moment. EFILive will fix that

    '06 LBZ/Allison 6speed, EC, LB, 1LT, Leather
    Current Mods: EFI Live/ PTO High Idle Mod/ Factory Exhaust Brake / BD Full Bore/ TransGo Jr./ TTS Twin Lift Pumps/ MBRP 4" turbo back/ Custom air box mod/ BullyDog Outlook Monitor

    465hp/1008tq---7/25/09---Dyno Day Fast Specialties Tuning by ME

  7. #7
    Lifetime Member LBZoom's Avatar
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    Somewhat, I'm glad Neens mentioned the pulse tables bc I hadn't caught that yet, but the allowed undersboost is what was causing it mostly as Killerbee stated. I had the boost tables set higher down low than what I know the truck was capable of because I wanted to ensure it would spool as fast as possible. Instead of changing the boost table, I just increased the allowable difference and it helped a bunch. He said it's still a bit lagging up to 55mph but then it comes alive so we still have a little tweaking. Thanks for all the help! I'm awaiting his most recent log file thought...
    Peace Through Torque

    Punisher Performance DSP5 Tuning, PPE Dual CP3's, 68mm Fleece Cheetah, Punisher Built trans w/ Suncoast Parts, Airdog 165, SoCal 100% Overs, ARP Studs

    2013 NHRDA Sportsman World Champion

    www.PunisherPerformance.com

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