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Thread: Brad Barnhill's Virtual Dyno with HP Tuners

  1. #501
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    i understand what you're saying, but i got some wild numbers in a 3rd gear pull too. i posted it on the VD facebook page but i'll find it and load it up here too.

  2. #502
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    here is a nice smooth 3rd gear log and the dyno graph i got out of it..




    in contrast, here are 2 2nd gear pulls using the cobalt ss/sc profile.. (i have an ion redline)
    these pulls were pretty much back to back.


    and in response to rootbeer... dynodynamics from what i have seen tends to read rather low, around mustang numbers. so still not bad for a stock tune.

  3. #503
    Advanced Tuner bbarnhill's Avatar
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    that spike is an anomaly ... what happened ... did you hit the clutch at WOT ... clutch slip ... something happened for sure. Its not something with VD causing that as that is exactly what the logger recorded. I bet we could see that in the data even. Graph Time vs RPM ...
    Brad Barnhill

    VIRTUAL DYNO
    The ONLY way to graph your runs.
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  4. #504
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    <?xml version="1.0" standalone="yes"?>
    <CarDataset xmlns="http://tempuri.org/CarDataset.xsd">
    <CarParameters>
    <CarMake>Saab</CarMake>
    <CarModel>9-3 Aero Auto</CarModel>
    <Weight>3800</Weight>
    <TransGear1>5.15</TransGear1>
    <TransGear2>2.37</TransGear2>
    <TransGear3>1.56</TransGear3>
    <TransGear4>1.15</TransGear4>
    <TransGear5>0.86</TransGear5>
    <TransGear6>0.69</TransGear6>
    <FinalGearRatio>3.53</FinalGearRatio>
    <DragCoefficient>0.28</DragCoefficient>
    <FrontalArea>21.2</FrontalArea>
    <TireDiameter>26.02</TireDiameter>
    </CarParameters>
    </CarDataset>

    i cant get the program to read this xml file or load it from the drop down list of vehicles?

    not sure if i have the frontal area 100% correct. i was reading earlier in the thread about a "cars" folder that i do not have

  5. #505
    Advanced Tuner bbarnhill's Avatar
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    You have it

    Ill get this car added for ya asap. Ive got another car to add too but Im running late for work or Id do it this morning. Ill try to get it in there this afternoon.

    Quote Originally Posted by g5 gxp View Post
    <?xml version="1.0" standalone="yes"?>
    <CarDataset xmlns="http://tempuri.org/CarDataset.xsd">
    <CarParameters>
    <CarMake>Saab</CarMake>
    <CarModel>9-3 Aero Auto</CarModel>
    <Weight>3800</Weight>
    <TransGear1>5.15</TransGear1>
    <TransGear2>2.37</TransGear2>
    <TransGear3>1.56</TransGear3>
    <TransGear4>1.15</TransGear4>
    <TransGear5>0.86</TransGear5>
    <TransGear6>0.69</TransGear6>
    <FinalGearRatio>3.53</FinalGearRatio>
    <DragCoefficient>0.28</DragCoefficient>
    <FrontalArea>21.2</FrontalArea>
    <TireDiameter>26.02</TireDiameter>
    </CarParameters>
    </CarDataset>

    i cant get the program to read this xml file or load it from the drop down list of vehicles?

    not sure if i have the frontal area 100% correct. i was reading earlier in the thread about a "cars" folder that i do not have
    Brad Barnhill

    VIRTUAL DYNO
    The ONLY way to graph your runs.
    Click here to donate

  6. #506
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    is there a way for me to edit the parameters later on? i'm still trying to figure out if these are 100% accurate?

  7. #507
    Advanced Tuner bbarnhill's Avatar
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    the year range was left out ... and the weight looks like a guesstimate. Just let me know when you have the specs complete as I can add them pretty quickly once you get them together.
    Brad Barnhill

    VIRTUAL DYNO
    The ONLY way to graph your runs.
    Click here to donate

  8. #508
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    how accurate are 3rd gear logs???

    Here is a 3rd gear log of a 2004 Z06 taken 20 minutes ago.

    200 delta weight, 26.41 tires.

    Is this a good log? Change to .csv and plug in and tell me what you think.

  9. #509
    Advanced Tuner bbarnhill's Avatar
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    me? I dont know I dont have a Z06

    The end of the graph sure has a big whip in it. When I trim out the whip I'm getting 373/400. Does that sound pretty close to you? I dont know what mods you have on the car or if its completely stock.
    Last edited by bbarnhill; 06-04-2012 at 08:49 PM.
    Brad Barnhill

    VIRTUAL DYNO
    The ONLY way to graph your runs.
    Click here to donate

  10. #510
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    Quote Originally Posted by bbarnhill View Post
    me? I dont know I dont have a Z06

    The end of the graph sure has a big whip in it. When I trim out the whip I'm getting 373/400. Does that sound pretty close to you? I dont know what mods you have on the car or if its completely stock.
    How did you trim out the whip?

    Which option did you use? Virtual Dyno?

    Car has an intake and tune.

  11. #511
    Advanced Tuner bbarnhill's Avatar
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    I use Virtual Dyno ... obviously since I wrote it. you can use the RPM slider at the bottom of each run box to trim to an RPM range. I used it to move the top RPM back to just before the whip to trim it out.

    Does that help?
    Brad Barnhill

    VIRTUAL DYNO
    The ONLY way to graph your runs.
    Click here to donate

  12. #512
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    I downloaded the program last night and it opened fine. Now, it says that an unhandled exception has occured with a component in the program and won't open. Any ideas?

    Also, I'm dumb when it comes to various types of files associated with computers, so what exactly do I need to do with a CSV file? In other words, how to I load my datalogs into the program? Sorry for the questions. I did read through the first few pages and then just figured I'd post up.

  13. #513
    Advanced Tuner bbarnhill's Avatar
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    well it not loading is an issue we must solve first but you just drag and drop your csv file onto the application and it loads it for you. Then just give it the required info and up pops your graph. Its designed to be very easy to use and I think its done a good job of being VERY easy. If you set up a profile on the profiles menu then you can select the profile when you come into the app and then drag and drop runs on the app and it will use those settings from the profile to graph instantly. Thats a feature for the tuners that are loading lots of logs in a row for the same car. (I like making their life easier too)

    Let me know more about this error on opening ... maybe copy the error and paste it here? Click the details button to get all the error info.
    Brad Barnhill

    VIRTUAL DYNO
    The ONLY way to graph your runs.
    Click here to donate

  14. #514
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    Quote Originally Posted by bbarnhill View Post
    well it not loading is an issue we must solve first but you just drag and drop your csv file onto the application and it loads it for you. Then just give it the required info and up pops your graph. Its designed to be very easy to use and I think its done a good job of being VERY easy. If you set up a profile on the profiles menu then you can select the profile when you come into the app and then drag and drop runs on the app and it will use those settings from the profile to graph instantly. Thats a feature for the tuners that are loading lots of logs in a row for the same car. (I like making their life easier too)

    Let me know more about this error on opening ... maybe copy the error and paste it here? Click the details button to get all the error info.
    Hmm, Ill re-try it once my desktop computer is fixed.

    Thanks for the explanation.

  15. #515
    Advanced Tuner bbarnhill's Avatar
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    Keep me posted as I want to know you get it working for ya.
    Brad Barnhill

    VIRTUAL DYNO
    The ONLY way to graph your runs.
    Click here to donate

  16. #516
    Tuner RooTBeeR's Avatar
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    yeah lately when open the program, it takes a few mins for the program to load and actually open instead of a few seconds like it used to.
    Caution:Slow Learner

  17. #517
    Advanced Tuner bbarnhill's Avatar
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    do you have an internet connection on the machine you are opening it on? Or is this on the road without a connection. Maybe that will help me debug it.
    Brad Barnhill

    VIRTUAL DYNO
    The ONLY way to graph your runs.
    Click here to donate

  18. #518
    Tuner RooTBeeR's Avatar
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    with an internet connection

    it takes a long time when it says "getting new car definitions"
    Caution:Slow Learner

  19. #519
    Advanced Tuner bbarnhill's Avatar
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    Does it always take forever on that step? That step should be VERY quick since its only downloading 65k of car definitions. It also shouldnt do that but every now and then when I release an update for the car defs.
    Brad Barnhill

    VIRTUAL DYNO
    The ONLY way to graph your runs.
    Click here to donate

  20. #520
    Tuner RooTBeeR's Avatar
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    yeah, didnt use to, but the last few weeks(i hadnt used it for a while before that) it has been doing it, it loads fast till the point in the pic and then stops for about 2-5mins everytime
    Caution:Slow Learner