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Thread: Histograms for Dual Widebands

  1. #1

    Histograms for Dual Widebands

    I'm currently using a MVPI2 with Pro Link. I have a wideband setup on input 1 and input 2.

    I can log both of them together fine; however I can't figure out how to setup a AFR ERR histogram for each wideband.

    This forces me to log a single bank at a time... better than having to switch the sensor under the car, but still not ideal.

    I know dual widebands can be logged using the AEM OBD2 setup; however I am using the X-Series inline units.

    Thanks for any input.

  2. #2
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    The inline x-series units can be re-flashed to work with the OBDII interface like the gauges.

  3. #3
    Advanced Tuner jsllc's Avatar
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    Quote Originally Posted by dr.mike View Post
    The inline x-series units can be re-flashed to work with the OBDII interface like the gauges.
    AND THEY WORK GREAT. Thanks again sir.
    2012 ZL1 - Maggie Heartbeat, Port & Polish Heads, Custom Cam, Custom rotating assembly, steel sleeved LS9, No NOS and No water meth. 16psi
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  4. #4
    Wait, so I can buy a 30-0310 inline unit, reflash it, and use it with the obdII interface (just like the 30-0334 I have but without the gauge)?! That would be a nice way to get a second wideband to monitor bank 2!

  5. #5
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    Yes. But, it's not QUITE that simple. The 30-0310 has to have its settings hard-coded, since there is no display to show the changes. That's why AEM does not sell OBDII versions of the 30-0310.

    If you KNOW what settings will work for your car, I can flash-load them into your 30-0310 and you can wire it in to the OBDII connector. The new wideband will need a different PID# and a different ECU# so that it will not conflict with the 30-0334. To check this, you need to play around with the PID and ECU settings on the 30-0334 and find which combinations work on your vehicle.

    The default setting for the 30-0334 is ECU=6 and PID=0 (0x24). Usually, ECU=7 and PID=1 (0x25) will work for a 2nd channel. But, sometimes, something is using one of those. If you can change your 30-0334 settings to 7 and 1, and still get it to work ( after re-scanning ) then you would probably be good to go with a 30-0310 re-flashed with those settings.

    Obviously, you have to set the 30-0334 back to ECU=6, PID=0, when you are done.

    If you send me the 30-310, along with the correct settings, I'll re-flash it and send it back.

  6. #6
    Thanks for the in-depth explanation. I'll give the 7 and 1 settings a try and see if it works. If so, I might go ahead and pick up a 30-0310 and give you a shout. Many thanks!