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Thread: Anyone have issues VVE tuning late model GENV stuff? Limp mode w/no maf

  1. #21
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    Quote Originally Posted by smokeshow View Post
    Make sure it's the Volumetric Efficiency (mg*K/kpa) one, not just the ratio...

    All I get are Zero's as well. I'm logging the proper channels. I think the math or PIDs may be off for Gen V but I haven't jumped into why yet. I get a logical value for VE(mg*K/kpa) but the math result is always zero.
    I'll probably try to build one off of dynamic, VE, and MAF airflow even though it wouldn't be usable above a certain point. I'm only looking at part throttle tuning anyhow at the moment.
    Last edited by TriPinTaZ; 07-11-2020 at 04:00 PM.
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  2. #22
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    Works on my most recent gen 5 files from a couple nights ago

    /shrug

  3. #23
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    Quote Originally Posted by smokeshow View Post
    Works on my most recent gen 5 files from a couple nights ago

    /shrug
    I found the issue. I think I had too many things monitored. The last logs didn't populate Speed Sensor or MAP and a couple others. I've reduced the channels and will try it again. Makes sense why I got all zero's if the MAP didn't populate.
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  4. #24
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    Confirmed, I had too many PIDs. I updated my list and verified and now I'm getting data.
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    Owner/GM Calibrator
    Gen V Specialist - C7 Corvette, Gen6 Camaro & CTS-V3

  5. #25
    i still get 0s for VE. I killed a ton of channels and still no dice. Are there channels that need to be monitored in order to build the VE channel?

  6. #26
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    You have to monitor all of the PID's that are in the formula or you will get zeros.
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    Owner/GM Calibrator
    Gen V Specialist - C7 Corvette, Gen6 Camaro & CTS-V3

  7. #27
    no, the VE channel is 0 is always reporting 0. the rest of the PIDS have values.

  8. #28
    Same here. I also deleted all other channels, and added that channel back to the Scanner (after disconnecting and reconnecting to the car, of course), and still nothing. There was another VE channel that I added, that was giving data, so that's what I've been working from. I'm on a 2020 ZL1, so I'm not sure if that differs from you, str8'.