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Thread: E38 VVE Setup Guide

  1. #111
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    Quote Originally Posted by joecar View Post
    Try it, but note that the VVE surface should "flow" and not have any abnormal/sudden change.
    Yep there isn't any crazy steps in it, if it's not my VVE then where should I be looking to get my idle AFR back closer to the commanded? Or is it a case of leaving it since it idles happily at these numbers.

  2. #112
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    I'm not sure what I'm doing wrong but I cant seem to get this VVE process working. it either causes huge peaks in areas and huge dips in others unless I use the copy and fill process, but when I use that it seems to change my logged data to much and don't get the desired effect in AFR? I have tried to attached a log but it wont so here is the latest tune file after applying this BEN Map.

    Clayton Mafless13.ctz

    Click image for larger version. 

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    Last edited by jmsmotorsport; February 13th, 2016 at 07:55 PM.

  3. #113
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    Found my problem, if you set map precision to 3 any numbers over 1 become .025 ect if it's set to 2 the number shows 1.02. So every time I would paste and multiply it would cause issues. In the mean time any rich spots have been sorted but all the lean spots never changed as they would multiply by .025 cause a huge hole then get smoothed out once I would gem coefficient and vve

  4. #114
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    Would this tutorial apply to a 2015 Camaro SS with E38 ?
    Thanks

  5. #115
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    Quote Originally Posted by Mrbowtie26 View Post
    Would this tutorial apply to a 2015 Camaro SS with E38 ?
    Thanks
    Yes, all E38/E67 and the general concepts apply to the E78/E39/E39A/E92 with some minor tweaks.
    ~Erik~
    2013 Sonic RS Manual - 1.4L I4T E78, tuned, turbo mods, etc.
    2008 TrailBlazer SS 3SS AWD Summit White - LS2 E67/T42, bolt ons, suspension, etc.
    2002 Chevy TrailBlazer LT 4X4 Summit White - 4.2L I6 P10, lifted, wheels, etc.

  6. #116
    Joe (Moderator) joecar's Avatar
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    E92 requires a calc pid for MAP:BARO ratio (which is used to reference the axis of the VVE tables)...

    i.e. define CALC.MAP_BARO to be {SAE.MAP.kPa}/{SAE.BARO.kPa}.

  7. #117
    Joe (Moderator) joecar's Avatar
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    Bump again.

    Quote Originally Posted by joecar View Post
    Links for easy reference:
    E38 VVE Setup Guide
    Virtual VE Tutorial

  8. #118
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    Quote Originally Posted by joecar View Post
    I should have been more precise:
    OL: runs adaptive spark (i.e. both HO/LO tables).
    SD: runs LO table only (for LS1B you would need a COS to run HO/LO).


    If you're running MAF then yes edit the HO table only.
    If you're running VE/SD then copy HO to LO and edit LO.

    If you're running a COS (LS1B), then VE/SD uses HO/LO.

    I don't know how this is handled in E38/E67 (there's no COS).
    I am trying to understand how to run only on an SD tune (MAF maxed out at 5K RPM) I have a E38 supercharged 7 Ltr LSX, and it does have the Alternate Fuel COS , so do I only tune the Lo timing tables? Also Am I also supposed to leave the AFR's changes as set in the VVE Tutorial? I do want to run on STFT, LTFT, and DFCO as some of the Open Road events have drastic altitude and Temperature changes. Is this going to be a problem?
    LBL866

  9. #119
    Joe (Moderator) joecar's Avatar
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    Make the MAF fail (i.e. force a MAF DTC immediately (you might have to increase the very low end of the MAF so engine can start and then throws a MAF DTC))... and go from there.

  10. #120
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    Quote Originally Posted by joecar View Post
    Make the MAF fail (i.e. force a MAF DTC immediately (you might have to increase the very low end of the MAF so engine can start and then throws a MAF DTC))... and go from there.
    Running on the VVE tables and doing some logging. I read back somewhere in this tute that it is possible to "Link Scans. Could you or someone explain "How to Link Scans"? I would be most grateful for that info :-)
    LBL866

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