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Thread: $OD .adx WBO2 change?

  1. #1
    Fuel Injected! babywag's Avatar
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    $OD .adx WBO2 change?

    For anybody familiar with working w/ .adx files...

    Currently the file converts the 0-5v output to AFR.
    What would one plug into the conversion to change this to display lambda?
    Right now I'm just dividing by 14.7, but seems to be unnecessary.
    It's being converted twice that way...

    I'm not the greatest w/ math LOL.

    So WB controller output is scaled 0v=10.0 and 5v=20.0
    Conversion line = X * 0.039063 + 10.000000
    I changed it to (X * 0.039063 + 10.000000)/14.7
    This works, but seems like there would be a better way?
    Tony

    '88 Jeep Grand Wagoneer (aka Babywag)
    '67 Jeep J3000
    '07 Dodge Magnum SRT8

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    RIP EagleMark's Avatar
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    0V = 0.50 Lambda and 5V = 1.50 Lambda.
    Lambda of 0.50 to 1.50 is a difference of 1.0 divided by 256 = 0.00390625

    Lambda .50 to 1.50 with 1.0 being Lambda. Conversion: X * 0.00390625 + 0.500000

    I sanity check by having three values for same data, one AFR, two WB voltage and three Lambda. At 2.5 volts should be 1.0 Lambda and 14.7 or 14.1 AFR depending on your WB controller if it can be set to anything but 14.7 AFR.

    Some WB controllers can not be adjusted, so 14.7 is Stoich. Narrow band O2 sensor adjusts to Stoich, so Lambda is always correct.

    1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
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  3. #3
    Fuel Injected! babywag's Avatar
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    Quote Originally Posted by EagleMark View Post
    0V = 0.50 Lambda and 5V = 1.50 Lambda.
    Lambda of 0.50 to 1.50 is a difference of 1.0 divided by 256 = 0.00390625

    Lambda .50 to 1.50 volts with 1.0 being Lambda. Conversion: X * 0.00390625 + 0.500000

    I sanity check by having three values for same data, one AFR, two WB voltage and three Lambda. At 2.5 volts should be 1.0 Lambda and 14.7 or 14.1 AFR depending on your WB controller if it can be set to anything but 14.7 AFR.

    Some WB controllers can not be adjusted, so 14.7 is Stoich. Narrow band O2 sensor adjusts to Stoich, so Lambda is always correct.
    So to repeat my question, what would the .adx conversion line be for a math challenged individual to display lambda vs. AFR?
    X * 0.00390625 + 0.500000 ???
    Tony

    '88 Jeep Grand Wagoneer (aka Babywag)
    '67 Jeep J3000
    '07 Dodge Magnum SRT8

  4. #4
    RIP EagleMark's Avatar
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    Yes.

    Quote Originally Posted by EagleMark View Post
    0V = 0.50 Lambda and 5V = 1.50 Lambda.
    Lambda of 0.50 to 1.50 is a difference of 1.0 divided by 256 = 0.00390625

    Lambda .50 to 1.50 volts with 1.0 being Lambda. Conversion: X * 0.00390625 + 0.500000

    I sanity check by having three values for same data, one AFR, two WB voltage and three Lambda. At 2.5 volts should be 1.0 Lambda and 14.7 or 14.1 AFR depending on your WB controller if it can be set to anything but 14.7 AFR.

    Some WB controllers can not be adjusted, so 14.7 is Stoich. Narrow band O2 sensor adjusts to Stoich, so Lambda is always correct.
    Unless I'm not understanding what " to display lambda vs. AFR?" means?

    You already have AFR based on 0-5 volts and 10-20 AFR, so make another value for Lambda, same as AFR, except the conversion.

    1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
    1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
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  5. #5
    Fuel Injected! babywag's Avatar
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    Quote Originally Posted by EagleMark View Post
    Yes.



    Unless I'm not understanding what " to display lambda vs. AFR?" means?

    You already have AFR based on 0-5 volts and 10-20 AFR, so make another value for Lambda, same as AFR, except the conversion.
    I think you got it right, I just didn't know how to do the math...
    I just want lambda displayed/logged/etc., I don't want AFR displayed/logged.
    Makes life easier because it's already the conversion factor.
    My WB displays lambda, I calculate corrections based on lambda, no need to see/deal with AFR.
    Easier to just use lambda, but the .adx was set-up w/ AFR.
    Tony

    '88 Jeep Grand Wagoneer (aka Babywag)
    '67 Jeep J3000
    '07 Dodge Magnum SRT8

  6. #6
    Fuel Injected! babywag's Avatar
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    I just tried it....seems off ~.1 vs my WB?

    I'm using an Innovate MTX-L configured for 0v=10.0 / 5v=20.0
    I double checked the WB config, and TunerPro is displaying ~.1 lower than the display.
    Tony

    '88 Jeep Grand Wagoneer (aka Babywag)
    '67 Jeep J3000
    '07 Dodge Magnum SRT8

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    RIP EagleMark's Avatar
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    There's so much that can go wrong with WB, mostly do to grounds of EFI system and grounds of WB. But can also include reading to gauge which is same if you use serial port but differant if you use AD1 or AD2.

    That is why I said originally I make three values, 1. WB AFR, 2. WB Volts, 3 WB Lambda. All three have to match, then match my gauge as well... if the three to ECM/PCM match and my gauge is still off it's usually a ground. Gauge grounds through WB, AD uses ECM/PCM.

    I've seen in instructions for Innovate products that there are several new versions on the LM Programmer, but still the website has the old version to download. Which version do you have? I'm still on 3.32, but 3.29 looks to be easier to set up.

    1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
    1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
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  8. #8
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    Quote Originally Posted by EagleMark View Post
    There's so much that can go wrong with WB, mostly do to grounds of EFI system and grounds of WB. But can also include reading to gauge which is same if you use serial port but differant if you use AD1 or AD2.

    That is why I said originally I make three values, 1. WB AFR, 2. WB Volts, 3 WB Lambda. All three have to match, then match my gauge as well... if the three to ECM/PCM match and my gauge is still off it's usually a ground. Gauge grounds through WB, AD uses ECM/PCM.

    I've seen in instructions for Innovate products that there are several new versions on the LM Programmer, but still the website has the old version to download. Which version do you have? I'm still on 3.32, but 3.29 looks to be easier to set up.
    I have 3.29...can try a newer version?
    WB is grounded to PCM
    I'm using serial for comparison to tunerpro.
    @ .55 it seems pretty close vs. .50
    Tony

    '88 Jeep Grand Wagoneer (aka Babywag)
    '67 Jeep J3000
    '07 Dodge Magnum SRT8

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    RIP EagleMark's Avatar
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    I wish Innovate would answer emails so I could get 3.29!

    Unless there website just says it's wrong version and download is new version? Did you get software from there website?

    Anyway if your sure the ground is at same ground lug as ECM/PCM and all connections are clean? Then just change the offset in conversion to make the difference. .50 to .55 is close. So the conversion will make the data accurate.

    Don't know how long you've had the WB installed but they usually need a free air calibration after first 500 miles or less, not so much after that. Free Air calibration can change readings by that much.

    1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
    1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
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  10. #10
    Fuel Injected! babywag's Avatar
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    Quote Originally Posted by EagleMark View Post
    I wish Innovate would answer emails so I could get 3.29!

    Unless there website just says it's wrong version and download is new version? Did you get software from there website?

    Anyway if your sure the ground is at same ground lug as ECM/PCM and all connections are clean? Then just change the offset in conversion to make the difference. .50 to .55 is close. So the conversion will make the data accurate.

    Don't know how long you've had the WB installed but they usually need a free air calibration after first 500 miles or less, not so much after that. Free Air calibration can change readings by that much.
    My WB is powered/grounded via PCM.
    I calibrated it ~200 miles ago if that when I relocated it from manifold flange to y-pipe.
    I downloaded 3.29 from site I can email it to you if you send me your address.
    Innovate doesn't answer emails least they never have from me?
    They do answer the phone and do good that way.
    Tony

    '88 Jeep Grand Wagoneer (aka Babywag)
    '67 Jeep J3000
    '07 Dodge Magnum SRT8

  11. #11
    RIP EagleMark's Avatar
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    I'll try re-installing the download from website and see if it is new version, the info on website is old version and download is same name...

    What do you mean "My WB is powered/grounded via PCM."
    PCM is grounded to engine, WB should be grounded to engine. Preferably same ground lug/bolt.
    Not sure how to power WB from PCM? Or if it should? A trigger from PCM for relay is what I do, other then that It's probably not a good idea? Not sure, never did that or tested...

    1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
    1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
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  12. #12
    Fuel Injected! babywag's Avatar
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    Should have said powered/grounded via same wires as PCM.
    PCM is powered via relay WB is on same wire.
    PCM is grounded properly WB is on same wire.
    You don't want to feed the WB from the vehicles existing wiring, and they should be on the same ground.
    Tony

    '88 Jeep Grand Wagoneer (aka Babywag)
    '67 Jeep J3000
    '07 Dodge Magnum SRT8

  13. #13
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    Change the offset in conversion.

    1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
    1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
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  14. #14
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    So thinking the WB being converted is losing some accuracy configured @ 0v=10.0 AFR / 5v=20.0 AFR

    Would reconfiguring it to the full lambda range make it more accurate?
    i.e. 0v=.5 / 5v=1.5 (aka 7.4/22.1) vs. current setup of 0v=.681 / 5v=1.361 (aka 10.0/20.0)
    Tony

    '88 Jeep Grand Wagoneer (aka Babywag)
    '67 Jeep J3000
    '07 Dodge Magnum SRT8

  15. #15
    RIP EagleMark's Avatar
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    It is already 0V = 0.50 Lambda and 5V = 1.50 Lambda.
    Lambda of 0.50 to 1.50 is a difference of 1.0 divided by 256 = Conversion: X * 0.00390625 + 0.500000

    Having WB voltage as another value is a sanity check. 2.5 volts = 1.0 Lambda, so now you have a key on reading and a half way point reading.

    Oh I see, you want to go to Innovate default which is a bigger spread, higher and lower AFR.

    You don't want any more resolution, believe me, it will drive you nuts. Just as the 5 volt spread of AFR will drive you nuts watching a WB gauge, to much swing. Lambda only moves 1.0 so it works well over 5 volts, AFR moves 10 and is just to much for data let alone the math.

    Then sampling rate of WB is so high it makes it worse, I slow it down.

    For someone who can't comprehend Lambda and how simple it is and must have AFR because that is what car guys and internet use, I usually set up their gauge on 1 volt, then it is back in line with Lambda and not all over the place.

    When you watch data like in monitors you'll see what I mean. Lambda is workable and AFR is all over the place. There are no filters in TP so can't take out TPS movement which adds AE, or take out Decel, DFCO etc... you can only turn off so much for data. I don't use an entire history table either. I strip out parts of data that are steady TPS%, this is easy when you drive specifically with steady TPS%.

    1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
    1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
    -= =-

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