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Thread: Calc.VET: correcting MAF and calculating VE (in single log)

  1. #311
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    Bummer.
    On m VET average map I have numbers as high as 2.44 and 2.47, and numerous cells over 2.0 in the upper rpms. Could it really be that lean? I know my wideband has read 17.x a few times at idle.

    I just want to make sure I've got thing correct before I start my copy, and pasteing.
    2007 TBSS-All stock
    2001 WS6 TA-Stockish, custom paint, LS7 clutch, spray, 6 point rollbar.
    1998 TA- Not much stock, 408, t350, spray, cage, fastest LSX in Alaska, 9.755@136 (so far)drag radial street car, driven, never trailered.


  2. #312
    R.I.P Shawn, 1956-2011 WeathermanShawn's Avatar
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    Those numbers indicate your VE Table units are in g*k/kPa. There is no direct unit correlation between that and wideband AFR readings. I.E., it will be your BENS that indicate whether your lean or rich.

    Are your SELBENS ~ 1.00 from 1500-12,000 Hz?

    If cammed, Idle occasionally will go from ~14-17 AFR at Idle. Any more and yes that would be lean.

    I suppose posting a Tune & Log would be better at this point. I'm not sure how to advise you whether your Tune is good to go yet....
    2002 Black Camaro Z-28 M6 Hardtop 11.0:1CR 425HP/410TQ SAE (400TQ@3500RPM)
    200cc Heads, 228/232 110+2 Cam, 1 3/4" LT's w/catts, GMMG, Koni Shocks, Hotchkis Springs, 35/21 Sways, 17" ZR1's, 3.90 Gears Roadrunner PCM LM-2 Serial Wideband
    EFILive Closed-Loop MAF/SD Hybrid Tune..


  3. #313
    Joe (Moderator) joecar's Avatar
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    Frozen WS6,

    try this: attach the pics directly in the post, i.e. in post #308 above, delete the url's, then click Manage Attachments and upload the files...

    see post #2 here: Hosting-an-Image

  4. #314
    Joe (Moderator) joecar's Avatar
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    What are your mods...?

  5. #315
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    Mods: 408 cid iron block, fast 92, 92 tb, ls6 ported+polished heads 2.08/1.60 valves, 11.7:1 compression, cam .248/.254 .622/.614 @114, kooks 1 7/8" stepped to 2" headers w/3.5" collectors, underdrive pulley.

    340 intank walbro pump, highflow fuel rails, -8 fuel lines, 42.5lb fast injectors.

    It is on spray but I'm working the NA tune right now.





    Click image for larger version. 

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    Last edited by Frozen WS6; June 27th, 2011 at 02:46 PM.
    2007 TBSS-All stock
    2001 WS6 TA-Stockish, custom paint, LS7 clutch, spray, 6 point rollbar.
    1998 TA- Not much stock, 408, t350, spray, cage, fastest LSX in Alaska, 9.755@136 (so far)drag radial street car, driven, never trailered.


  6. #316
    R.I.P Shawn, 1956-2011 WeathermanShawn's Avatar
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    Frozen:

    On your SELBEN Map..if you could change 'Cell Count' to 'Average Value'..that will allow us to see the actual data..

    I see you had a max of 11.9 degrees of KR. Whats going on there?
    2002 Black Camaro Z-28 M6 Hardtop 11.0:1CR 425HP/410TQ SAE (400TQ@3500RPM)
    200cc Heads, 228/232 110+2 Cam, 1 3/4" LT's w/catts, GMMG, Koni Shocks, Hotchkis Springs, 35/21 Sways, 17" ZR1's, 3.90 Gears Roadrunner PCM LM-2 Serial Wideband
    EFILive Closed-Loop MAF/SD Hybrid Tune..


  7. #317
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    I usually get knock at low rpms, mostly idle. But that was the first time I've seen so much. I think it's my coil. So I'm going to swap one off of my WS6 and see if it clears up. Here are a couple of other scans of the knock area and the upper rpms. Also I switched the Selben to averages.

    Click image for larger version. 

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    Last edited by Frozen WS6; June 28th, 2011 at 01:36 AM.
    2007 TBSS-All stock
    2001 WS6 TA-Stockish, custom paint, LS7 clutch, spray, 6 point rollbar.
    1998 TA- Not much stock, 408, t350, spray, cage, fastest LSX in Alaska, 9.755@136 (so far)drag radial street car, driven, never trailered.


  8. #318
    Joe (Moderator) joecar's Avatar
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    Your scantool still has MAP in psi units (you want kPa)...

    on PIDs tab: on SAE.MAP do rightclick->Metric.


    Also: for maps A and B, in map properties goto each tab Data, Row, Col and checkmark Show Units and save the map.

  9. #319
    Joe (Moderator) joecar's Avatar
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    Also, I don't see the pid CALC.VEN... you're using an older calc_pids.txt file.

  10. #320
    R.I.P Shawn, 1956-2011 WeathermanShawn's Avatar
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    Also, Frozen is your SELBEN Table plotting vs MAF frequency or RPM?

    At some point it might be easier to just attach the Log with all the MAPS you used.

    I have a feeling their are some issues here that might not allow you to use this log..
    2002 Black Camaro Z-28 M6 Hardtop 11.0:1CR 425HP/410TQ SAE (400TQ@3500RPM)
    200cc Heads, 228/232 110+2 Cam, 1 3/4" LT's w/catts, GMMG, Koni Shocks, Hotchkis Springs, 35/21 Sways, 17" ZR1's, 3.90 Gears Roadrunner PCM LM-2 Serial Wideband
    EFILive Closed-Loop MAF/SD Hybrid Tune..


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