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Thread: CALC.VET Struggles, VE Values Don't Seem Sane

  1. #11
    Joe (Moderator) joecar's Avatar
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    Quote Originally Posted by statesman View Post
    I just had a quick look at the log you posted and your IAT values are insane.
    I had not noticed this, thanks for pointing this out.

  2. #12
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    Quote Originally Posted by joecar View Post
    The CALC.VET map is not the correction multiplier... it is the calculated VE...

    The Calc VET procedure corrects the MAF table and calculates the VE table from it.

    ( you will need to handraulically fill in unhit cells and make other adjustments... eyeball it and use common sense )

    On the map, turn on the Data Units.
    Well that would explain why I get the data that I get. I figured it was something stupid like that. Copy/paste with multiply MAF and copy/paste for the VE. Looking back at the tutorial again there it is, I must have glossed right over it and read whatever I wanted to. Thanks!
    1998 GMC Sierra K1500 5.7/4L80E, longtubes, 411 w/COS 5, marine cam/intake, Whipple. 91 octane at 6000'.
    1997 GMC Sierra K3500 7.4/4L80E, 411 w/COS 3, Whipple, small cam.
    2004 Corvette Z06 with longtubes.

  3. #13
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    This last run was a bit odd. For one, I'm seeing the same lame 125kpa here at 2500' elevation that I saw down at 800' elevation, the bypass valve must not be working correctly. Anyway I did get some insane values this time. Some of the cells with low counts and everything above 105kpa is asking for 200 on a table that maxxes out at 10. I'm trying to deal with the rest but man do I suck at blending, I think I went too far with the linear blend tool as there is zero curvature now. Here's the log.

    Dually Edwards calcvet1.efi

    The MAF is doing it too. I wonder if the MAF is being wonky? I just cleaned it a couple of weeks ago.

    EDIT: Disregard for the moment, I cracked open the dashboard and the lambda was pegged at 65. I set it to AEM back in CO to snag that log with my 1500 and didn't change it back to the Techedge that lives in the 3500. Good thing I wasted all that time on the VE map!
    Last edited by Supercharged111; September 11th, 2021 at 01:30 PM.
    1998 GMC Sierra K1500 5.7/4L80E, longtubes, 411 w/COS 5, marine cam/intake, Whipple. 91 octane at 6000'.
    1997 GMC Sierra K3500 7.4/4L80E, 411 w/COS 3, Whipple, small cam.
    2004 Corvette Z06 with longtubes.

  4. #14
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    And it's working just fine now. The more I log the more I realize how many things I still haven't addressed. That said, the truck has been to both sides of the country in the last couple months with a load. It's more the finishing touches as the MAF was corrected less than 10%, in most cases less than 5%, and the VE actually came down in some places while increasing in others. I'm still blown away at how close the stock VE was on this thing, I remember deviating quite a bit farther with the black box on my 1500 way back when.
    1998 GMC Sierra K1500 5.7/4L80E, longtubes, 411 w/COS 5, marine cam/intake, Whipple. 91 octane at 6000'.
    1997 GMC Sierra K3500 7.4/4L80E, 411 w/COS 3, Whipple, small cam.
    2004 Corvette Z06 with longtubes.

  5. #15
    Joe (Moderator) joecar's Avatar
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    Post log files, let me look at your MAF signal.

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    Below is the last calcvet log I took.

    Dually Edwards calcvet3.efi
    1998 GMC Sierra K1500 5.7/4L80E, longtubes, 411 w/COS 5, marine cam/intake, Whipple. 91 octane at 6000'.
    1997 GMC Sierra K3500 7.4/4L80E, 411 w/COS 3, Whipple, small cam.
    2004 Corvette Z06 with longtubes.

  7. #17
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    Did you switch the tune over to MAF only mode to do that log?

  8. #18
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    Quote Originally Posted by statesman View Post
    Did you switch the tune over to MAF only mode to do that log?
    Doh! I forgot you like MAF only and DFCO disabled. Was there anything else?
    1998 GMC Sierra K1500 5.7/4L80E, longtubes, 411 w/COS 5, marine cam/intake, Whipple. 91 octane at 6000'.
    1997 GMC Sierra K3500 7.4/4L80E, 411 w/COS 3, Whipple, small cam.
    2004 Corvette Z06 with longtubes.

  9. #19
    Joe (Moderator) joecar's Avatar
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    +1 what statesman said...

    You must run MAF only in order to be able to calculate VE (otherwise you're calculating VE from VE rather than from MAF).

  10. #20
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    Quote Originally Posted by joecar View Post
    +1 what statesman said...

    You must run MAF only in order to be able to calculate VE (otherwise you're calculating VE from VE rather than from MAF).
    Man I'm batting 1000. I should have also consulted this thread.

    https://forum.efilive.com/showthread...-Summary-Notes

    I'll check back in after my next logging session.
    1998 GMC Sierra K1500 5.7/4L80E, longtubes, 411 w/COS 5, marine cam/intake, Whipple. 91 octane at 6000'.
    1997 GMC Sierra K3500 7.4/4L80E, 411 w/COS 3, Whipple, small cam.
    2004 Corvette Z06 with longtubes.

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