Results 1 to 8 of 8

Thread: O2 heater control

  1. #1
    Lifetime Member ProperTuningOG's Avatar
    Join Date
    Dec 2014
    Posts
    218

    Default O2 heater control

    With all the wiring we do, it sure would be nice to control the style of O2 heater in the LS1B ecm. Just wondering if this is something do able via CAX? I would assume since the .xdf I have for tunerpro shows the address on a 12202088 OS. I know time is money and I'm not asking for hand outs...........

  2. #2
    Lifetime Member 5.7ute's Avatar
    Join Date
    Oct 2006
    Posts
    1,837

    Default

    Quote Originally Posted by Team208Motorsports View Post
    With all the wiring we do, it sure would be nice to control the style of O2 heater in the LS1B ecm. Just wondering if this is something do able via CAX? I would assume since the .xdf I have for tunerpro shows the address on a 12202088 OS. I know time is money and I'm not asking for hand outs...........
    If you have the definition in tunerpro already, writing a cax file for it will be fairly simple. (assuming the definition is correct obviously)
    However, by my memory map there are quite a few settings that may need to be adjusted to get them operating correctly. You would need to get a bin file of an OS with both types & do a compare to see if there are any other differences. If there is then you would need to write a cax for the entire o2 segment.
    The Tremor at AIR

  3. #3
    Lifetime Member ProperTuningOG's Avatar
    Join Date
    Dec 2014
    Posts
    218

    Default

    Is there any type of starter file for a cax? Not a full tutorial, just something to give an idea of whats what beyond comparing various ones. I have been poking around with building one based on the hex address I have and I have not been having much luck.

  4. #4
    Lifetime Member 5.7ute's Avatar
    Join Date
    Oct 2006
    Posts
    1,837

    Default

    There isn't a tutorial of any kind, apart from the descriptions contained in the cax file itself.
    I basically taught myself how by reverse engineering other cax files that had been written. The hardest part IMO is getting the scaler right. Luckily GM are fairly consistent in how certain units are scaled. So if you know the scaler for rpm was x, you can be fairly certain any other cax file for rpm will use the same scaler of x.
    Since you have a definition file in tunerpro, you will be able to read the scaler values from that.
    If you still have problems, post the cax file on here and we can take a look at it.
    The Tremor at AIR

  5. #5
    Lifetime Member ProperTuningOG's Avatar
    Join Date
    Dec 2014
    Posts
    218

    Default

    I'll give it another shot and post it up. What I am really having trouble with is locating the cax in the correct category of efi live.

  6. #6
    Joe (Moderator) joecar's Avatar
    Join Date
    Apr 2003
    Posts
    27,779

    Default

    Look at the B9021 cax as an example.
    Last edited by joecar; February 19th, 2015 at 03:23 AM. Reason: spelling

  7. #7
    Lifetime Member ProperTuningOG's Avatar
    Join Date
    Dec 2014
    Posts
    218

    Default

    Will do.

  8. #8
    Lifetime Member ProperTuningOG's Avatar
    Join Date
    Dec 2014
    Posts
    218

    Default

    Quote Originally Posted by joecar View Post
    Look at the B9021 cax as ana example.
    Awesome, thats exactly what I needed!!!! Thanks

Similar Threads

  1. intake heater delete
    By lp14255 in forum Duramax 06 LLY / 06+ LBZ & LMM
    Replies: 0
    Last Post: January 26th, 2014, 03:17 PM
  2. Intake heater delete
    By JustinD in forum Duramax LB7
    Replies: 0
    Last Post: June 1st, 2010, 04:22 AM
  3. Intake heater
    By Jetmech in forum Duramax LB7
    Replies: 1
    Last Post: October 21st, 2009, 02:37 PM
  4. LC-1 heater power question...
    By ToplessTexan in forum External A/D inputs
    Replies: 14
    Last Post: January 31st, 2007, 12:18 PM

Posting Permissions

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