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  1. Thread: Aem 30-0334

    by dr.mike
    Replies
    7
    Views
    92

    The only measurement it knows how to make is the...

    The only measurement it knows how to make is the percentage of oxygen at the sensor tip. AFR and lambda are just calculated from that number by a formula. In reality, the o2% can be negative, when...
  2. Thread: Aem 30-0334

    by dr.mike
    Replies
    7
    Views
    92

    A lot like you described. 0.0% would be...

    A lot like you described. 0.0% would be everything richer than 14.7afr ( lambda 1.0 , or, zero free oxygen )
    0.05 to 2.5% would be on the lean side, usually with 2.5% ish only happening on decel....
  3. Thread: Aem 30-0334

    by dr.mike
    Replies
    7
    Views
    92

    Something is off, there. Can you maybe post a...

    Something is off, there. Can you maybe post a video of the issue ? rCal should be fine for almost all conditions.

    To test it,

    1. Set the gauge to rCal
    2. Set the gauge to display o2%
    3....
  4. Thread: Aem 30-0334

    by dr.mike
    Replies
    7
    Views
    92

    Free-air cal will not help this one. You do...

    Free-air cal will not help this one. You do need to run the analog negative to the ground on the MPVI2 so the the gauge and the scanner will agree on what ground level is.
  5. One last thing, the digital OBDII interface is...

    One last thing, the digital OBDII interface is MUCH more accurate than the uncompensated analog output of the Innovate gauge.
  6. Yes. That is the re-flash. It converts an AEMNet...

    Yes. That is the re-flash. It converts an AEMNet X-series device to an OBDII device. But, you have to come up with your own wiring. i.e. you have to come up with your own pass-thru adapter or,...
  7. 0-5v analog signals can't be placed on the OBDII...

    0-5v analog signals can't be placed on the OBDII connector. You would have to create a version of the AEM 30-0334 circuit that converts ARF data to digital OBDII data.

    I have flashed several of...
  8. Thread: Wideband Usage

    by dr.mike
    Replies
    3
    Views
    126

    If the sensor is in the exhaust, it MUST be...

    If the sensor is in the exhaust, it MUST be running with the controller/heater. The sensor needs to be hotter than the exhaust gas to keep deposits from settling on it, and, fouling the element. ...
  9. Replies
    17
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    368

    Yes, the 30-4110 uses the 4.9 sensor, now. But,...

    Yes, the 30-4110 uses the 4.9 sensor, now. But, it is a bit of a kludge. i.e. It's the old 30-4100, tweaked to use a different sensor type. But, the change, really, requires different circuitry...
  10. Replies
    17
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    368

    The AEM 30-4110 is kinda a dead technology. And,...

    The AEM 30-4110 is kinda a dead technology. And, was designed for the old LSU4.2 sensors. Better to get the current 30-0300, if the price is even close.
  11. page 7 of the 30-0306 instructions manual gives...

    page 7 of the 30-0306 instructions manual gives the specifics for the 0-5v output.

    https://www.aemelectronics.com/files/instructions/30-0306.pdf

    0-5V Analog Output Scaling Formulas
    psia =...
  12. Did you remember to ground the brown wire ?

    Did you remember to ground the brown wire ?
  13. Replies
    7
    Views
    412

    You need to connect the brown wire from the gauge...

    You need to connect the brown wire from the gauge to the ground pin on the MPVI for the analog signal to work properly. That is the ground reference line.
  14. Thread: O2 wideband

    by dr.mike
    Replies
    31
    Views
    747

    This method does not work, yet. The CAN...

    This method does not work, yet. The CAN connection of the AEM 30-0334 is through the OBDII connector. And, that woks with pretty much all CAN based ECUs. The CAN wires on the prolink are a...
  15. IIRC, the E38 has a CAN interface. So, if you...

    IIRC, the E38 has a CAN interface. So, if you have the X-series version of the AEM wideband, you are WAY better off using the OBDII direct interface; than using the 0-5v signal.
  16. Replies
    33
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    838

    I would check with the mfg. But, I am pretty...

    I would check with the mfg. But, I am pretty sure that countdown is the heating cycle. Fortunately, the NTK sensors are a bit more sturdy vis-a-vis thermal shock, than the Bosch versions. But,...
  17. Replies
    33
    Views
    838

    Please, do not do this. When you say hot, you...

    Please, do not do this. When you say hot, you mean HOT. As in over 1200degF on the CERAMIC sensor element. Hitting that HOT element with cold start-up exhaust gas is the #1 killer and degrader of...
  18. Replies
    2
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    275

    Pretty sure that means that your ECU does not...

    Pretty sure that means that your ECU does not have a CAN interface. You will probably need to hook up by either the analog or serial interfaces.
  19. As you move away from the midpoint, at lambda...

    As you move away from the midpoint, at lambda 1.000, the voltage curve is HIGHLY dependent on EGT and exhaust back pressure. You can't map a voltage to an AFR/Lambda value with any useful...
  20. Replies
    6
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    352

    That's the rub. But, it's really worth it,...

    That's the rub.

    But, it's really worth it, in this case. People tend to think of AFR as a quality of combustion measurement. But, it is, also, the physical ratio of air mass to fuel mass....
  21. Replies
    6
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    352

    You should be able to create a MAF map,...

    You should be able to create a MAF map, directly, by logging fuel flow and AFR. i.e. air flow LITERALLY IS fuel flow x AFR. If your wideband is fast and accurate enough to keep up; then, you...
  22. Should be good to go. And... there it is :)

    Should be good to go.



    And... there it is :)
  23. Thread: Aem 30-0334

    by dr.mike
    Replies
    6
    Views
    339

    If you don't need the display, the 30-0310 is the...

    If you don't need the display, the 30-0310 is the simplest/cleanest solution with the best performance. Once the pro-link CAN interface is up and reading the AEMNet digital data, it will be the best...
  24. Thread: Aem 30-0334

    by dr.mike
    Replies
    6
    Views
    339

    You can add the analog and output pins to the...

    You can add the analog and output pins to the connector and use the 30-0334 just like the non-OBDII 30-0300. Only difference is that you cant use the CAN data interface with the prolink, since it is...
  25. Replies
    22
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    1,193

    Sensor calibration ( Or, "Free Air Calibration" )...

    Sensor calibration ( Or, "Free Air Calibration" ) is a mixed bag. The AEM controllers can do it , too. But, I, generally, don't recommend it, unless the sensor has drifted significantly. But, how...
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