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  1. #1

    Power Commander CMD-POD300 and Vtech Logging

    Here is a couple of screen shots off two of my loggers The first is off my POD300 with a Candoo Pro GPS for speed input.

    http://www.nbs-stl.com/RxpxTuning/POD300.png

    and the same data off my Vtech logger

    http://www.nbs-stl.com/RxpxTuning/Vtech.png

    Notice how the speed is somewhat different. Note that the Vtech setup has twice the data rate. It is tough to verify what one is more "accurate" so to speak.

    I personally would not consider giving up either one at this point.

    Have fun tuning.

    Andy
    Last edited by whittlebeast; 05-22-2015 at 02:49 PM.


  2. #2
    Note that the spikes in AFR in the CMD log is when the the rev limiter is active.

  3. #3
    Sanfish's Avatar
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    Interesting....

    Why not filter the AFR/WB on the CMD setup, seems a bit noisy (visually).

    What is the sampling rate of the Candoo? (seems higher)

    I have a CMD new in the box for a rainy day...but the terrible water sealing is preventing me from taking it serious. If DynoJet were to make the CMD/PCV fully waterproof and offer ignition control (box) like they do for the Kawi, they would have a slick setup. I like how quickly you can make fuel adjustments and upload to unit, super fast!

  4. #4
    That is where I use MAPxRPM vs Duty Cycle to verify if the AFR seems reasonable

    Andy

  5. #5
    I forgot to mention that I was "on the power" for 14.9 sec in that pull.

    Andy

  6. #6
    I updated the two links given in the first post.

    I also added this screen shot.

    http://www.nbs-stl.com/RxpxTuning/Vt...SigStockIC.png

    The nearly straight line in the top right is where all the hard acceleration happens. The goal of building any blower motor is to shift this line vertically and to the right. I will be testing a Fizzle setup hopefully this weekend with the same logging setup.

    Here is a pick right before I installed the oil catch can and rear bodywork.

    http://www.nbs-stl.com/RxpxTuning/Fizzle05.jpg

    The blue hose is the 3.5" custom cold air intake running up to the front of the ski.

    Andy

  7. #7
    Here is the AFR plots off the Dynojet POD 300. I am really starting to like this thing.

    http://www.nbs-stl.com/RxpxTuning/POD300%20AFR.png

    Andy

  8. #8
    Quote Originally Posted by Sanfish View Post
    I have a CMD new in the box for a rainy day...but the terrible water sealing is preventing me from taking it serious. If DynoJet were to make the CMD/PCV fully waterproof and offer ignition control (box) like they do for the Kawi, they would have a slick setup. I like how quickly you can make fuel adjustments and upload to unit, super fast!
    As to the water sealing, the board itself is completely potted in epoxy. The only openings are the USB port (which has a rubber plug), the CAN ports (which have rubber plugs or CAN connectors will be installed) and the side terminal strip (which has a rubber membrane that wires can poke through, but do a good job of sealing around them). On the inside of a ski, we do not normally see issues with water splashing the units.

  9. #9

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    Quote Originally Posted by whittlebeast View Post
    Here is the AFR plots off the Dynojet POD 300. I am really starting to like this thing.

    http://www.nbs-stl.com/RxpxTuning/POD300%20AFR.png

    Andy

    Are you using two 02 Sensors or logging one at a time?

  10. #10
    Quote Originally Posted by Askin View Post
    Are you using two 02 Sensors or logging one at a time?
    I have just one O2 sensor hole. Normally I run the O2 sensor with the Dynojet. I generally do fuel analysis with the CMD. I use the Vtech logger for looking at the ignition side of things.

    Andy

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