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Thread: [Vauxhall Astra '99] ELM327 vs Tech2

  1. #1
    Newbie
    Join Date
    Jun 2007
    Posts
    3

    [Vauxhall Astra '99] ELM327 vs Tech2

    Hi all,

    I am trying to setup a carpc on my Vauxhall Astra Estate 1.6 Club (1999) which will include the display of diagnostics and the logging of some of the data obtainable from the OBDII interface. I see that there is a huge price differenze between the packaging of RS232/USB cables with the ELM327 chip and the Tech2. So ... in order to get the max data out of my car, can I just use the Tech2 or would I get more with the ELM327 ?

    Also ... anyone knows where I can find the details of the protocols supported by the ODB of my car model.
    And ... any good linux or opensource software for OBD ?

    Tnx in advance !

    nikione

  2. #2
    VENDOR - OBDPros
    Join Date
    Mar 2006
    Posts
    359
    The Tech 2 is a GM approved scantool and hence will include the most updated capabilities for your car, but displaying the data and showing stuff on your car pc will be limited as the TECH 2 does not have a fancy dash etc.

    The ELM327 based scantools have an advantage as there are a number of software packages that allow you to create a virtual dash on your car PC.

    Thanks
    Paul
    www.obdpros.com

  3. #3
    Newbie
    Join Date
    Jun 2007
    Posts
    3
    Tnx Paul, that's exactly what I wanted to know.

    So "reverse engineering" or protocol drafts for the Tech2 in order to develop custom apps have not been released yet ?

  4. #4
    VENDOR - OBDPros
    Join Date
    Mar 2006
    Posts
    359
    I have not come across the protocol for tech 2 but I am sure it's out there somewhere

    I have heard though that the tech2 does support J2534 but do not have access to one to play around with and figure it out

    Paul
    www.obdpros.com

  5. #5
    Constant Bitrate
    Join Date
    Oct 2005
    Location
    UK
    Posts
    118
    Quote Originally Posted by nikione View Post
    Hi all,

    I am trying to setup a carpc on my Vauxhall Astra Estate 1.6 Club (1999) which will include the display of diagnostics and the logging of some of the data obtainable from the OBDII interface. I see that there is a huge price differenze between the packaging of RS232/USB cables with the ELM327 chip and the Tech2. So ... in order to get the max data out of my car, can I just use the Tech2 or would I get more with the ELM327 ?

    Also ... anyone knows where I can find the details of the protocols supported by the ODB of my car model.
    And ... any good linux or opensource software for OBD ?

    Tnx in advance !

    nikione
    nikione,

    I'm afraid that you will find your Astra is not OBD2 compliant. You can "bolt" a tool into your CarPC, but it will have to be Vauxhall specific, have a look at our Vauxhall product for some guidance.

    Gareth
    UKOBD

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