Page 1 of 3 123 LastLast
Results 1 to 10 of 27

Thread: EFI Idiot

  1. #1
    Junior Member
    Join Date
    Sep 2015
    Posts
    12

    Default EFI Idiot

    I'm a self acknowledged EFI idiot. I'm a long time EFI live forum reader, first time poster. I'm surrendering because my brain is bleeding trying to figure out wtf I'm doing. Let me give you some background.
    - L92 from an 08 Cadillac in a rockcrawler, stand alone (modified) engine harness.
    - 6l80
    - Engine has
    -- LS3 intake/injectors
    -- L92 stock MAF/MAP sensors
    -- VVT delete kit
    -- yella terra 1.8 ratio roller rockers
    -- vinci torker cam CC236xl .551”/.551/212/224/114+0A
    -- shorty headers, mufflers, no cats or rear o2 sensors

    I had a mast HO VVT cam in it and took it to the dyno earlier this month, it made 0 power under 3500 rpm, the tuner recommended I change the cam and delete the VVT. So, I deleted the vvt and installed the vinchi cam. It seems to run fine but you can tell it needs adjustment. I want to tune the Cam on my own, I have a V2 and a LC-2 that I have up and running. I tried following the virtual Ve tutorials but can't get it to log right since the "commanded AFR" pid is unavailable (x'd out). I did the best I could come up with but have absolutely no idea what to do with the data I harvested on my test drives. Would anyone mind giving my tune and logs a view and telling me what I should be doing? I'm not sure what is considered normal, abnormal, or dangerous at this point. The Wideband O2 seems to be reading a lot rich at idle (around 20-25 AFR).
    Attached are the Tune. Log 1 which was taken with the MAF disconnected and the autove tune I made (would hardly run unless loaded when the engine was already over 180 degrees) Log 002 is with the MAF hooked back up and the attached tune loaded. Suggestions? Thanks ahead of time -EFI Idiot.
    Attached Files Attached Files

  2. #2
    Joe (Moderator) joecar's Avatar
    Join Date
    Apr 2003
    Posts
    28,403

    Default

    Log E38.AFRATIO and SAE.LAMBDA instead of GM.AFR... (if SAE.LAMBDA works properly then this is the pid to log).

    Is your LC-2 connected to your V2 using serial comms (it should)...?

    So your pids would be SAE.LAMBDA and EXT.WO2LAM1... so your BEN pid would be CALC.WO2BEN = EXT.WO2LAM1 / SAE.LAMBDA, we would need to edit your calc_pids.txt to do this.

  3. #3
    Joe (Moderator) joecar's Avatar
    Join Date
    Apr 2003
    Posts
    28,403

    Default

    the injector pids are GM.INJPWB1 and GM.INJPWB2 (there is no DC% pid, we'll have to edit calc_pids.txt);

    if GM.KR does not work, log GM.KNKRET or GM.KNKRET_B;

    there are some other E38 pids you should be logging also, see the VVE Guide.

  4. #4
    Joe (Moderator) joecar's Avatar
    Join Date
    Apr 2003
    Posts
    28,403

    Default

    Ok, in Log_0002.efi I see your LC-2 connected using serial comms...

    I would also log SAE.LAMBDA as a sanity check.

    You need more pids to see what is going on.

  5. #5
    Joe (Moderator) joecar's Avatar
    Join Date
    Apr 2003
    Posts
    28,403

    Default

    See post #83 here: E38-VVE-Setup-Guide/page3

  6. #6
    Junior Member
    Join Date
    Sep 2015
    Posts
    12

    Default

    Ok, its set up like that I added a few more PIDs to the log. The vehicle is warming up now, once its hot, I'll load the vve dial in tune (set up like that guide) and go for a ride to see what I can capture. What is still unclear to me after reading all of those guides is how I use the information gathered on the log to make adjustments to the VE tables. Will have new logs in a few.

  7. #7
    Junior Member
    Join Date
    Sep 2015
    Posts
    12

    Default

    Okay, here is the log from the drive. Tune set up for logging with all of the minimum ids from the E38-VVE setup guide plus a few extras. Map disconnected, loaded then had a nice long drive but didn't get a whole lot in the upper RPMs.
    Log_0003.efi
    Last edited by Rockgolem; September 27th, 2015 at 11:08 AM.

  8. #8
    Junior Member
    Join Date
    Sep 2015
    Posts
    12

    Default

    Now I'm pretty sure I didn't do this right because it leaned out way to much but......I copied the Map with labels and then pasted it into B8101 using past with "multiply and labels" After I drove it with this tune, it seemed to lean (perhaps dangerously) It felt like it lost a lot of power Tune and log file from that drive attached. I'm going to stop and wait for some extra advice from you experts before I do something wrong enough for it to get expensive.

    Modded VVE dial in tune: VVE dial in_0001.ctz
    Log of that tune: Log_0004.efi

  9. #9
    Junior Member
    Join Date
    Sep 2015
    Posts
    12

    Default

    On a side note, since my vvt is gone, and I'm running the Ls3 intake/injectors, my L92 has essentially become an LS3. Would it be easier to copy/paste the LS3 VE tables into my tune as a better place to start for VE tuning?

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

    Default

    List of pids to log (we may have to cut the list down a little):
    - E38.SCALEDUNVE_DMA
    - E38.SCALEDCORVE_DMA
    - E38.INVLVTMP_DMA
    - E38.INJPDELTA_DMA
    - E38.APCYL_DMA
    - E38.AFRATIO_DMA (you already have this) this depends on B3601
    - SAE.MAP (you already have this)
    - SAE.MAF
    - SAE.LONGFT1
    - SAE.LONGFT2
    - SAE.SHRTFT1
    - SAE.SHRTFT2
    - SAE.LAMBDA (you already have this)
    - SAE.RPM (you already have this)
    - SAE.IAT (you already have this)
    - SAE.ETC
    - GM.FTC
    - GM.HO2S11
    - GM.HO2S21
    - GM.ETCTP instead of GM.APP
    - GM.KNKRET or GM.KNKRET_B whichever one works
    - GM.SPARKADV (you already have this)
    - GM.MAFFREQ2 (you already have this)
    - GM.INJPWB1 (you already have this)
    - GM.INJPWB2

    - EXT.WO2LAM1 (you already have this)
    - EXT.WO2AFR1
    (you already have this)

    We'll have to define CALC.WO2BEN as "{EXT.WO2LAM1}/{SAE.LAMBDA}".

    EXT.DYNLAMBDA is for external lambda from dyno, the value logged is a 0-2V squarewave, looks like it's not valid.

Page 1 of 3 123 LastLast

Similar Threads

  1. am i an idiot? how do you upgrade to COS on E40???
    By rubbersidedown in forum Gen IV V8 Specific
    Replies: 14
    Last Post: March 17th, 2011, 11:49 AM
  2. Idiot question: how to retrieve log
    By thunderstruck507 in forum FlashScan V2 BB Logging
    Replies: 7
    Last Post: July 27th, 2010, 04:07 PM
  3. Efi live class at efi university
    By Robbie The Wrench in forum General (Petrol, Gas, Ethanol)
    Replies: 0
    Last Post: September 1st, 2008, 02:25 PM
  4. Replies: 8
    Last Post: May 16th, 2007, 10:04 AM
  5. "Idiot" needs help!
    By EFI Idiot in forum General (Petrol, Gas, Ethanol)
    Replies: 4
    Last Post: January 11th, 2007, 10:23 AM

Posting Permissions

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