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Thread: LML vane position at idle

  1. #21
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    Hmm. That sounds right.. I just got excited and left it like that but when I get a chance I will see what it's actually doing
    08 LMM CC Dually

    Canada

  2. #22
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    Quote Originally Posted by DURAtotheMAX View Post
    Isnt that going to limit overall vane position though? Like not allow full closure of the vanes during exhaust braking or high-idle/heater performance?

    In playing around with vane position tables, I was able to get it to stay open at idle sometimes, but not all the time. I ran out of time to play with it and dont have easy access to the truck anymore. But I never messed with B1202 because I figured it would limit overall max allowed vane position at any time.
    That's what I figured too. I think it would be similar to messing fpr duty cycle. It cause surging or low rail pressure.
    2015 3500HD crew cab long bed, 6" fabtech, slightly tuned, emissions intact.
    2005 dmax ccsb, EFI live tuned DSP 5 Full built motor, S471 billet single, More better built trans this time. and lots of other things.
    1984 CJ7 powered by a 2000 LS1. 4L60E.
    2012 Jetta TDI 6 speed manual, (yes the dirty the bastard haha)
    2003 Jetta TDI,
    1986 K10 LQ4/4L80E

  3. #23
    Lifetime Member DURAtotheMAX's Avatar
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    I dont have a truck to try it, but maybe make sure all of the desired boost tables are equal to or lower than the actual atmospheric pressure....

    For example, B0727, says that in the idle RPM range, the maximum boost that can be commanded is almost 10psi over standard atmospheric pressure.....what does the ECM do when it wants the actual boost to meet the desired boost? It closes or opens the vanes....
    2005 Silverado, CC/SB, 4x4, LT, LILLY/Allison
    12.9s @ 108 mph

    many thanks to Ross and Paul

  4. #24
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    You guys are right. I'm not making commanded boost. Hmm. I'll have to keep hunting to see how I can quiet down at idle.
    08 LMM CC Dually

    Canada

  5. #25
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    Quote Originally Posted by DURAtotheMAX View Post
    I dont have a truck to try it, but maybe make sure all of the desired boost tables are equal to or lower than the actual atmospheric pressure....

    For example, B0727, says that in the idle RPM range, the maximum boost that can be commanded is almost 10psi over standard atmospheric pressure.....what does the ECM do when it wants the actual boost to meet the desired boost? It closes or opens the vanes....
    I didn't have much luck with this. it may help but theres a combo of switches that need to be coreect to get it to do what you want.
    2015 3500HD crew cab long bed, 6" fabtech, slightly tuned, emissions intact.
    2005 dmax ccsb, EFI live tuned DSP 5 Full built motor, S471 billet single, More better built trans this time. and lots of other things.
    1984 CJ7 powered by a 2000 LS1. 4L60E.
    2012 Jetta TDI 6 speed manual, (yes the dirty the bastard haha)
    2003 Jetta TDI,
    1986 K10 LQ4/4L80E

  6. #26
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    I'll keep playing with it when I get a chance. Appreciate all the help.
    08 LMM CC Dually

    Canada

  7. #27
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    Quote Originally Posted by LMMPerrona View Post
    I'll keep playing with it when I get a chance. Appreciate all the help.
    Maybe post your file and I can see if anything sticks out. I haven't tuned an LML yet, just LBZ and LMM but maybe a 2nd set of eyes would help?

  8. #28
    Lifetime Member DURAtotheMAX's Avatar
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    Quote Originally Posted by SASDakota View Post
    Maybe post your file and I can see if anything sticks out. I haven't tuned an LML yet, just LBZ and LMM but maybe a 2nd set of eyes would help?
    LML turbo control is significantly more complicated than 2004.5-2010 LLY/LBZ/LMM.
    2005 Silverado, CC/SB, 4x4, LT, LILLY/Allison
    12.9s @ 108 mph

    many thanks to Ross and Paul

  9. #29
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    Gotcha. Who doesn't like a good challenge?

  10. #30
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    Did anyone Ever get this issue Ironed out?
    2003 LB7 ECSB
    - Not Built, Intake, Mbrp Black Series 5" Straight, Banks Big Head Wastegate
    - Bagged in rear with Air Lift, 305/65/17
    - EFI Live By Myself, Used For Work
    - Sold at 242k

    2011 LML CCSB
    - Stock... For Now

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