1. 26 Feb 2011 at 11:57 PM #1
    M3Laith

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    OBD-II is a system used in automobiles to monitor various components of the vehicle, detect malfunctions, and store the information in the vehicle’s on-board computer to be recovered later by a service technician. OBD-II is an acronym for on-board diagnostics; the “II” denotes the second and most current version of this technology.

    OBD-II uses various sensors throughout the car to provide the computer, also called an electronic control unit (ECU) with information such as engine and ambient temperatures, vehicle speed, and so on. The ECU then advances or retards ignition timing and adds or subtracts fuel accordingly. It also tests the signals of all attached sensors. When a signal is missing or out of spec, the OBD-II system illuminates the CEL (engine light) and stores a corresponding diagnostic trouble code its memory.

    The information from the OBD-II memory is read through a connector inside the auto. OBD-II improves on OBD-I not only in its more sophisticated diagnostic abilities, but also in that it allows three types of data to be read: trouble codes, real-time data - the raw sensor information reported to the OBD-II computer, and freeze-frame data - a “snapshot” of sensor data at the moment the car’s CEL went on. OBD-II codes are read using cables and software built to communicate with OBD-II systems. These can take the form of stand-alone units or software that is installed on a PC. Some are complex models intended for professional technicians; simpler units are priced towards hobbyists.

    [thanks to wisegeek]
     
  2. 27 May 2011 at 7:57 PM #2
    fjrman

    fjrman On the path

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    Nice write up mate
    :thumbsup:
     
  3. 22 May 2012 at 11:31 PM #3
    UKLooney

    UKLooney A mere Chipper

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    There are lots of cool apps for your smartphone to log and display realtime obd2 info and diagnostic codes.

    Check out the Android Play Store (Market) or the Apple app store & search for obd or obd2

    [​IMG]

    [​IMG]

    Add a GTR style display to your ride. :rolleyes:
     
  4. 22 May 2012 at 11:54 PM #4
    indy

    indy Moderator

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    thats pretty cool! which app is it and how much does it cost :muttley:
     
  5. 24 May 2012 at 11:18 PM #5
    UKLooney

    UKLooney A mere Chipper

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    The android app pictured above is not available on the market yet. I'm currently using a beta version. It should cost around a quid or two when it finally arrives.

    Here is another similar android app I use, It's called Torque OBD2, and is about three quid last time I checked. A jack of all trades, and does most things including logging and diagnostics.
    [​IMG]

    Here is something similar but different. Still uses OBD2 interface though. Called aLapRecorderHD, and costs around the same. Anyone recognise the track?

    [​IMG]
     
    Last edited: May 24, 2012
  6. 1 Jun 2012 at 8:23 PM #6
    UKLooney

    UKLooney A mere Chipper

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    The beta can be got here, currently free.

    google play store
     
  7. 1 Jun 2012 at 10:16 PM #7
    Gaz Jones

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    Cheers for the link Looney :) That beta looks really good. Looking forward to seeing the finished software.
     
  8. 3 Jun 2012 at 12:08 PM #8
    g2rpx

    g2rpx Wearing official robes

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    Thought it might have stood for..

    Obsessive BMW Disorder lol
     
  9. 11 Jul 2012 at 11:27 PM #9
    malcsmith

    malcsmith On the path

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    anyone tried the 'bluedriver' by lemur app?
     
  10. 11 Jul 2012 at 11:34 PM #10
    malcsmith

    malcsmith On the path

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  11. 15 Oct 2012 at 2:21 PM #11
    dias7777

    dias7777 Wearing official underwear

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    how complicated is it to change the OBD port on the e92 m3?
     
  12. 31 Jul 2013 at 2:42 PM #12
    Joe M

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    So this post was over a year ago, but Kames?
     
  13. 31 Jul 2013 at 3:11 PM #13
    dimi108

    dimi108 Wearing official robes

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    I've got an OBD II USB cable from BM Technic.

    How do you get your phone to display your vehicle's RPM etc? What cable is needed?
     

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