Results 1 to 8 of 8

Thread: Hooking up Lm-1 wideband to SCT XCal3

  1. #1
    Join Date
    Jan 2016
    Location
    South NJ
    Posts
    459

    Hooking up Lm-1 wideband to SCT XCal3

    Anyone have a definitive guide as to how to hook this up? Lm-1 from innovate, hooking up to an SCT XCal3 via FireWire cable. I did it back in June but since forgot. I can't find a guide online that tells me exactly which wire goes where. I have seen the pinouts for the FireWire and all that, but do both grounds get hooked up, and then grounded together? And the analog wires that get hooked together, do they just get hooked together, or also into a 12v source? Very confusing when reading articles Les online about it
    2003 Marauder 300A
    #2928 of 7838
    Build date: 8/6/02
    Ship date: 5/28/03
    14.33 @ 96.82 with OLD engine
    6R80 swap in progress

    1968 Chevelle
    NA/Pump Gas 10.4 @ 128 mph
    416/4L85E LSA Supercharged build underway

  2. #2
    Join Date
    Sep 2004
    Location
    Woodbridge, VA
    Posts
    1,623
    I've never hooked the LM1 into an Xcal device, but I would just connect the corresponding wires from the serial to the firewire ends. And yes ground everything to the same point. Shouldn't have to hook up a 12v source. The LM1 is just outputing the proper 0-5v signal that is being fed into the xcal.
    ~Chris

  3. #3
    Join Date
    Sep 2004
    Location
    Woodbridge, VA
    Posts
    1,623

  4. #4
    Join Date
    Jan 2016
    Location
    South NJ
    Posts
    459
    Quote Originally Posted by Blown3.8 View Post

    Those are exactly the materials I was referencing. It doesn't say where to connect the output from the 3.5mm jack.

    I think I hooked it up correctly, but my xcal3 just reads 13.8-14.0 no matter what. Even during idle when my actual Lm-1 reads 14.5-15.0.
    2003 Marauder 300A
    #2928 of 7838
    Build date: 8/6/02
    Ship date: 5/28/03
    14.33 @ 96.82 with OLD engine
    6R80 swap in progress

    1968 Chevelle
    NA/Pump Gas 10.4 @ 128 mph
    416/4L85E LSA Supercharged build underway

  5. #5
    Join Date
    Sep 2004
    Location
    Woodbridge, VA
    Posts
    1,623
    I haven't used a 3.5mm jack. I've always used the round serial plug. But it sounds like you have a ground offset.

    Are you using the cigar lighter plug? You may try running a ground wire from wherever you grounded the wires to the cigar lighter ground.
    ~Chris

  6. #6
    Join Date
    Nov 2009
    Location
    NH
    Age
    56
    Posts
    177
    I thought the jack was to connect to the old style serial port on a computer so you can use the LM Programmer to customize the high/low afr end of the voltage spectrum.
    You may have to program it. I think analog out 1 reads as a narrowband too.

  7. #7
    Join Date
    Jan 2016
    Location
    South NJ
    Posts
    459
    Quote Originally Posted by justgod View Post
    I thought the jack was to connect to the old style serial port on a computer so you can use the LM Programmer to customize the high/low afr end of the voltage spectrum.
    You may have to program it. I think analog out 1 reads as a narrowband too.
    Yep you are correct. I programmed it and it worked before.

    I am looking for a no **** "this wire goes here" type explanation if anyone has it. From what I remember It's only 2 wires from the 3.5mm Jack ( a ground and output) and a couple from the firewire cable (analog and ground) but I'm not sure if the output is powered or what? I think I may have damaged the Lm-1 when I connected it to a power source.
    2003 Marauder 300A
    #2928 of 7838
    Build date: 8/6/02
    Ship date: 5/28/03
    14.33 @ 96.82 with OLD engine
    6R80 swap in progress

    1968 Chevelle
    NA/Pump Gas 10.4 @ 128 mph
    416/4L85E LSA Supercharged build underway

  8. #8
    Join Date
    Jan 2016
    Location
    South NJ
    Posts
    459
    Pretty sure I hooked it up right, after hooking it up wrong and frying the output port on my LM-1.

    I Have the 3.5mm ground and the firewire ground connected and grounded.

    I have an analog output wire on the 3.5mm connected to the an analog on the firewire. So two pairs of wires connected in total, with one pair being grounded.

    Looks like I need to be looking for a new (old) lm-1 unit.
    2003 Marauder 300A
    #2928 of 7838
    Build date: 8/6/02
    Ship date: 5/28/03
    14.33 @ 96.82 with OLD engine
    6R80 swap in progress

    1968 Chevelle
    NA/Pump Gas 10.4 @ 128 mph
    416/4L85E LSA Supercharged build underway

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. xcal3
    By bugsyc in forum Tuning
    Replies: 4
    Last Post: 05-12-2012, 05:49 AM
  2. xcal3
    By BirchMarauder in forum The Lounge
    Replies: 1
    Last Post: 02-27-2012, 08:46 AM
  3. For Sale SCT Xcal3
    By Raudermaster in forum Other Parts for Sale
    Replies: 4
    Last Post: 06-27-2010, 06:16 PM
  4. Wanted To Buy Xcal3
    By Blackened300a in forum Other Parts/Misc. Wanted
    Replies: 2
    Last Post: 06-18-2010, 02:54 AM
  5. Wanted To Buy CAI,xcal3
    By dwrwebb in forum Marauder Parts/Misc. Wanted
    Replies: 8
    Last Post: 05-21-2010, 08:27 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
  •