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Thread: E40 LS2 c6 cam+ idle tuning

  1. #1
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    Default E40 LS2 c6 cam+ idle tuning

    Hey everyone, first thanks in advance for any help.
    I have tuned a few different cars and know the E78/E38 pretty well. This E40 on my own personal C6 is frustrating me a tad.

    Ive gone through hundreds of pages in various books, threads etc and it appears that within EfiLive I do not have access to the tables that the HPT guys do?
    I am hoping that I may be wrong as I am invested in V2 on several cars including my 16 LML Denali.

    Specifically what I want to do is control or specify the commanded closed loop idle mixture?
    Does anyone who is well versed in the E40 have a procedure lined out for how to setup the idle airflow?

    • Changes I have made to Minimum Idle Airflow (B1829) seem to have no effect on actual idle.
    • Is cheating by modifying (B1650) Max ETC Area the only way to "trick it" into more idle throttle? Assuming it does not barf and throw codes....
    • What do the (B1651-1652) Max Idle Area 1 & 2 do?



    Thanks again,

  2. #2
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    Yikes, nada.
    One of the guys on the HPT board wrote a full E40 idle tuning guide. Was curious if the same might exist here.

    Thanks again if anyone can chime in.

  3. #3

  4. #4
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    opcode, thanks that thread does have some helpful info even though its the E38 vs my E40

    The 2 tables I do not have (that im used to in the E38) is B1843-1845 aka Idle Integral Step Size and Proportional size... for control of the PID loop. What I was wondering is if anyone here knew a "trick" or substitution to use in the E40 to accomplish the same thing.
    Last edited by 496Stingray; February 14th, 2017 at 03:20 AM.

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