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Thread: L83 dying on hard stops

  1. #1
    Advanced Tuner WS6HUMMER's Avatar
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    L83 dying on hard stops

    So I have a 14 Sierra that had lifter failure & now has a TSP stage 2 truck cam with a 10% lobe, I was told the phaser was locked. I have revisited the VVE 3 times & it still kills occasionally on aggressive braking even though the lamda error is spot on. Hoping I'm missing something.
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    Something to try - Idle speed reserve - copy and paste very left row into second row / external load needs to be higher in the idle areas - without a log file hard to tell what timing is doing, but keep an eye on torque and timing
    2010 Vette Stock Bottom LS3 - LS2 APS Twin Turbo Kit, Trick Flow Heads and Custom Cam - 12psi - 714rwhp and 820rwtq / 100hp Nitrous Shot starting at 3000 rpms - 948rwhp and 1044rwtq still on 93
    2011 Vette Cam Only Internal Mod in stock LS3 -- YSI @ 18psi - 811rwhp on 93 / 926rwhp on E60 & 1008rwhp with a 50 shot of nitrous all through a 6L80

    No Longer with passion performance auto for good reasons

  3. #3
    Advanced Tuner WS6HUMMER's Avatar
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    Quote Originally Posted by GHuggins View Post
    Something to try - Idle speed reserve - copy and paste very left row into second row / external load needs to be higher in the idle areas - without a log file hard to tell what timing is doing, but keep an eye on torque and timing
    Thank you so much for the reply and suggestion, I can definitely see that working out. I just didn't know how aggressive I could be with this table. I'll try it, log it, & report back, thanks again.

  4. #4
    Senior Tuner SultanHassanMasTuning's Avatar
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    -40.0000000000001 -4.00000000000006 13.9999999999999 31.9999999999999 122 194 ?F
    300 500 500 500 500 500 500
    370 500 500 500 500 500 500
    435 500 500 500 500 500 500
    500 500 500 500 500 500 500
    560 500 500 500 500 500 500
    660 500 500 500 350 200 150
    800 350 350 351.861633300781 266.583740234375 157.870895385742 117.16349029541
    1000 235.659973144531 176.727310180664 140.235412597656 147.41764831543 97.6864700317383 70.2541885375977
    1300 187.350173950195 140.637115478516 111.527801513672 113.520050048828 71.4819564819336 33.7193794250488
    1600 135.962875366211 92.2597885131836 64.5962829589844 67.7235565185547 30.0199794769287 -3.95597004890442
    2000 64.4371566772461 24.9751300811768 0.648970007896423 2.19403004646301 -31.0249805450439 -34.6629295349121
    2500 61.305290222168 22.674840927124 -0.798479974269867 -0.683640003204346 -34.980598449707 -36.0093803405762
    3200 55.7668113708496 16.6191692352295 -7.31453990936279 -6.38021993637085 -40.0067405700684 -43.3471488952637
    4000 44.9382514953613 5.65797996520996 -18.4412498474121 -17.2493190765381 -50.7039184570313 -55.1003608703613
    5000 28.8811798095703 -10.3892202377319 -34.476131439209 -33.3033790588379 -66.770751953125 -71.0883865356445
    6100 9.47577953338623 -29.8991394042969 -54.1164894104004 -52.7407302856445 -86.0725784301758 -91.222297668457
    6600 -0.11116000264883 -39.3958587646484 -62.9360694885254 -62.3259010314941 -95.6652603149414 -97.4788284301758
    rpm
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  5. #5
    Advanced Tuner WS6HUMMER's Avatar
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    Thank you! I'll give those external load values at try and let you know how it liked it.
    Last edited by WS6HUMMER; 6 Days Ago at 10:22 AM.

  6. #6
    Advanced Tuner WS6HUMMER's Avatar
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    Quote Originally Posted by SultanHassanMasTuning View Post
    .
    Quote Originally Posted by GHuggins View Post
    Something to try - Idle speed reserve - copy and paste very left row into second row / external load needs to be higher in the idle areas - without a log file hard to tell what timing is doing, but keep an eye on torque and timing
    Ok I tried both suggestions separately, no dice & then tried them together, still no dice. So I went really aggressive on the speed control reserve and it may have helped slightly but I'm not sure. I did logs this time, posting the final file I ended up with and the log from that file, thanks again for your time and your help, I'm still green with gen V torque based idle strategy.

  7. #7
    Senior Tuner SultanHassanMasTuning's Avatar
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    log zero throttle torque
    E-tuning/remote Tuning Sultan@mastuning.net Follow @MASTUNING Contact/Whatsapp +966555366161
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  8. #8
    Advanced Tuner WS6HUMMER's Avatar
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    Quote Originally Posted by SultanHassanMasTuning View Post
    log zero throttle torque
    This OS doesn't appear to have that PID available, tried to upload the offline vehicle file but the file type isn't supported by the forum to upload. Here's what I have available.
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    Last edited by WS6HUMMER; 1 Week Ago at 09:42 AM.

  9. #9
    Advanced Tuner WS6HUMMER's Avatar
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    Any other suggestions?