Page 6 of 7 FirstFirst ... 4567 LastLast
Results 51 to 60 of 66

Thread: Having trouble lately with higher IAT

  1. #51
    Lifetime Member
    Join Date
    Aug 2013
    Posts
    735

    Default

    Your injector data is now good. I'm adjusting your O2 switch points which will affect fueling a little bit, so flash in the attached tune file and do a Calc.VET using trimming for CL and wideband for PE. When you get that done, let me know and we'll move on to your airflow.
    Attached Files Attached Files

  2. #52
    Member
    Join Date
    Nov 2011
    Posts
    94

    Default

    Long work week. Finally got to the car. Attached is the "BEFORE" log and the resulting tune from the CALC.VE process. The VE table i just hit smoothing once after pasting. MAF table needed some hand blending and smoothing above 7000hz. I have not taken a log after.
    Attached Files Attached Files

  3. #53
    Lifetime Member
    Join Date
    Aug 2013
    Posts
    735

    Default

    Okay, now let's look at your airflow. Log the same parameters as you were logging in your last log but add the following to your list...

    GM.IAC
    GM.IAC_STD_DMA
    GM.IAC_STPN_DMA
    GM.IAC_LTD_DMA
    GM.IAC_LTPN_DMA
    GM.IAC_SUM_DMA

    Don't worry if you go over 24 channels... fast frame rate is not important for this.

    Do this log with your a/c off. Log a warm up in gear from a cold start. Just sit there in gear with your foot on the brake. When the engine is fully warm, shift into park and then blip the throttle once (that's just so I have an easy to find marker when you shifted into park) and let it idle in park for a couple of minutes. It's easy to log, but painfully boring.

  4. #54
    Member
    Join Date
    Nov 2011
    Posts
    94

    Default

    Log attached.
    Attached Files Attached Files

  5. #55
    Lifetime Member
    Join Date
    Aug 2013
    Posts
    735

    Default

    I asked you to log GM.IAC_SUM_DMA but you logged GM.IAC_SUP_DMA instead. Do another warm up log in gear like the last one, but this time include GM.IAC_SUM_DMA in your log and get up to full operating temperature before shifting into park.
    Attached Files Attached Files

  6. #56
    Member
    Join Date
    Nov 2011
    Posts
    94

    Default

    Ah crap

  7. #57
    Member
    Join Date
    Nov 2011
    Posts
    94

    Default

    Finally got the log with correct pids.
    Attached Files Attached Files

  8. #58
    Lifetime Member
    Join Date
    Aug 2013
    Posts
    735

    Default

    It's looking better already. Airflow should line up reasonably good with this update.

    Do another warm up log in gear, like you've been doing.
    Attached Files Attached Files

  9. #59
    Member
    Join Date
    Nov 2011
    Posts
    94

    Default

    Alright got the latest log right here.
    Attached Files Attached Files

  10. #60
    Joe (Moderator) joecar's Avatar
    Join Date
    Apr 2003
    Posts
    28,403

    Default

    Ah, you're running a GenIII... I was looking for GenIV and/or GenV logging the pid SAE.LAMBDA

    ( sorry for not be clear )

Page 6 of 7 FirstFirst ... 4567 LastLast

Similar Threads

  1. hesitate at higher speeds??
    By ryanb in forum Duramax LB7
    Replies: 4
    Last Post: February 7th, 2013, 05:19 PM
  2. Sparks Higher than we are asking
    By Forcefedperformance in forum Gen III V8 Specific
    Replies: 12
    Last Post: April 22nd, 2010, 07:02 AM
  3. What happens when I set a value higher than the tables know?
    By LBZoom in forum Duramax 06 LLY / 06+ LBZ & LMM
    Replies: 5
    Last Post: August 1st, 2009, 02:32 AM
  4. more air = higher compression?
    By jchev502 in forum Vortec V6/V8 Specific
    Replies: 3
    Last Post: July 19th, 2008, 09:21 AM
  5. Lean idle w/ higher IAT temps
    By SSpdDmon in forum General (Petrol, Gas, Ethanol)
    Replies: 15
    Last Post: September 14th, 2006, 03:03 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •