Results 1 to 7 of 7

Thread: FJO GENIII wideband controller

  1. #1
    Lifetime Member 67SS509's Avatar
    Join Date
    Dec 2005
    Posts
    230

    Default FJO GENIII wideband controller

    Needed a second wideband controller so I bought a GenIII FJO. I have been using a GenII FJO with serial connection for several years and I have been well pleased with it. Got it today and started looking it over. It does not have the serial style cable but a device that converts to a USB plug. How do I take this to the V2? Also looks like it powers up thru the USB. Does that sound possible? Settings in the V2 does show a selection for the GenIII. Anybody got one of these working?

    Click image for larger version. 

Name:	GenIIIconvertorbox 001.jpg 
Views:	569 
Size:	267.0 KB 
ID:	15078
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	GenIIIdiagram 002.jpg 
Views:	550 
Size:	314.3 KB 
ID:	15077  
    Last edited by 67SS509; May 19th, 2013 at 02:22 AM. Reason: added diagrams
    2002 Chevy truck, SCSB 2WD, Stroked LS3 w/Big Mutha Thumper cam
    2002SS Camaro LS7/427 with stock suspension setup
    2012 Chevy truck, SCSB 2WD, Magnaflow exhaust + K&N

  2. #2
    Joe (Moderator) joecar's Avatar
    Join Date
    Apr 2003
    Posts
    28,403

    Default

    You really do need the serial comms connection...

    and a separate power/ground connection.

  3. #3
    Joe (Moderator) joecar's Avatar
    Join Date
    Apr 2003
    Posts
    28,403

    Default

    Do you have any wiring diagram of its interface (or can you reverse engineer the USB interface, it probably is some serial-to-USB converter)...?

  4. #4
    Lifetime Member 67SS509's Avatar
    Join Date
    Dec 2005
    Posts
    230

    Default

    Thanks for taking a look at this Joecar. FJO don't even mention the interface being supplied with the wideband. Looking at the wiring diagram the white/red wire is the only wire that moves data when connected to the PC. To be "serial" that will work with the V2 doesn't it need to be 2 data wires and ground?
    Being that FJO has sold out to Holley I don't believe I'm going to get much help from them on this.
    2002 Chevy truck, SCSB 2WD, Stroked LS3 w/Big Mutha Thumper cam
    2002SS Camaro LS7/427 with stock suspension setup
    2012 Chevy truck, SCSB 2WD, Magnaflow exhaust + K&N

  5. #5
    Joe (Moderator) joecar's Avatar
    Join Date
    Apr 2003
    Posts
    28,403

    Default

    2-wires+ground: bi-directional serial comms.

    1-wire+ground: single direction serial comms <-- this is sufficient.

  6. #6
    Lifetime Member 67SS509's Avatar
    Join Date
    Dec 2005
    Posts
    230

    Default

    Quote Originally Posted by joecar View Post
    2-wires+ground: bi-directional serial comms.

    1-wire+ground: single direction serial comms <-- this is sufficient.
    But which one is the V2 going to want?
    2002 Chevy truck, SCSB 2WD, Stroked LS3 w/Big Mutha Thumper cam
    2002SS Camaro LS7/427 with stock suspension setup
    2012 Chevy truck, SCSB 2WD, Magnaflow exhaust + K&N

  7. #7
    Joe (Moderator) joecar's Avatar
    Join Date
    Apr 2003
    Posts
    28,403

    Default

    For example:
    - AEM UEGO only has a single wire (transmit) from which V2 reads lambda;
    - LC-1 has two wires (transmit/receive) from which the V2 reads lambda (transmit) and writes commands (receive).

    It all depends on the wideband.

Similar Threads

  1. FJO wideband install
    By sinr98 in forum Gen III V8 Specific
    Replies: 3
    Last Post: April 27th, 2010, 03:15 AM
  2. FJO wideband install
    By sinr98 in forum General
    Replies: 0
    Last Post: April 27th, 2010, 02:03 AM
  3. fjo wideband
    By articSS in forum External A/D inputs
    Replies: 2
    Last Post: May 27th, 2007, 08:02 AM
  4. FJO wideband compatable?
    By BackinBlack02SS in forum General (Petrol, Gas, Ethanol)
    Replies: 1
    Last Post: April 6th, 2006, 03:25 PM
  5. FJO Wideband & EFIlive?
    By 67SS509 in forum General
    Replies: 8
    Last Post: January 11th, 2006, 12:59 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •