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Thread: PLX SM-AFR Serial upgrade

  1. #1
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    Default PLX SM-AFR Serial upgrade

    Hi jez came up to mackay for the weekend and we worked out what parts & pids are needed for a PLX SM-AFR to output serial data in to your V2 cable & in passthrough mode

    3 wire is all the is needed in side the SM-AFR and a serial cable with a RJ12 crimped on

    the parts are off ebay it took just over a week to get to OZ

    http://cgi.ebay.ca/ws/eBayISAPI.dll?...m=160220472353






    Geoff

  2. #2
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    Just modded my PLX also for serial coms. Works great.

  3. #3
    Lifetime Member JezzaB's Avatar
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    Certainly made my life sooo much easier after I did it. Couldnt go back to analog now.

    Jez

  4. #4
    Lifetime Member MICK's Avatar
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    Default Hummm

    Thanks Guys the pictures answered all my questions.

    Nice work!

    Mick
    Rev it up, Drop the clutch, See what happens?

  5. #5
    Lifetime Member Mr. P.'s Avatar
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    Hi, I'm only half-following here - what's the purpose of doing this? Are you monitoring the WB with a PC via serial???

    Mr. P.

  6. #6
    Lifetime Member JezzaB's Avatar
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    Quote Originally Posted by Mr. P. View Post
    Hi, I'm only half-following here - what's the purpose of doing this? Are you monitoring the WB with a PC via serial???

    Mr. P.
    The V2 unit has a RS232 serial interface. Instead of logging with analog where alot of us are getting voltage offsets and its throwing the AFRs out. You connect the PLX to the V2 so you get a pure signal from the PLX as the PLX see's it, straight to the V2.

    Nice accurate AFR readings

    Jez

    PS The TTL converter board is a 3-5v board, so if you tap the regulated power to the PIC chip inside the PLX, it supplies a nice and stable 3.54v (red wire) to power it.

  7. #7
    Joe (Moderator) joecar's Avatar
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    Allows V2 to read the AFR from the wideband in digital form (i.e. what the wideband's controller says it is).

    Nice work you guys...

  8. #8
    Lifetime Member Chalky's Avatar
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    For the technically challenged, after adding the three wires, where would I find the cable for the serial adapter to the V2?
    Last edited by Chalky; April 20th, 2008 at 09:53 AM.
    2007 Silver Z06

  9. #9
    Lifetime Member MICK's Avatar
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    Default Hummm

    I purchased everything I needed to make a plx cable from jay-car.

    6 x RJ12 plugs for $1.80 (This was the smallest quantity).
    1 meter flat stranded 6 core wire cable $0.90.
    1 x D9 shell $1.80.
    1 x D9 plug $1.20.

    I lashed out...LOL
    Rev it up, Drop the clutch, See what happens?

  10. #10
    EFILive Developer Site Admin Blacky's Avatar
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    Quote Originally Posted by Chalky View Post
    For the technically challenged, after adding the three wires, where would I find the cable for the serial adapter to the V2?
    The serial cable ships with FlashScan. It has an RJ12 plug on one end to fit into FlashScan and a 9 pin serial plug on the other end.

    Regards
    Paul
    Before asking for help, please read this.

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