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Thread: A way to cheat and fix your strims/ltrims using Rtac Very quickly.

  1. #1
    EFILive Reseller wait4me's Avatar
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    Default A way to cheat and fix your strims/ltrims using Rtac Very quickly.

    Hi guys,

    Here is what i did,

    I set up the system so it will shut off ltrims, and use strim feedback from the o2 sensors to do auto correction to the ve table.

    What does this mean?

    Well, when we are tuning our cars and mess with the ve, the pcm always changes itself back to what the o2 sensors are wanting when we are using our widebands. So, well, this way will just change and set up the ve table to what the Computer and its 02 sensors thing it needs to be. I have tested it on SEVERAL vehicles and it works awsome! It tunes the vehicle to a 0 strim all over the whole ve table except at 80kpa up. that is where you need to be using your wideband. Also you need to make sure your wideband is on and working just to verify you have no problems with the stock 02 sensors or have a vacume leak ect.....

    """"""""""Warning modifying this file may screw with things, save a copy first before proceeding"""""""""""""""""

    OK, here is what is needed to be done.

    1st we need to set up a Calculated pid that takes strims and makes it to a Ben filter like pid.

    To do that, we have to modify the "sae_generic.txt" file located in the efilive folder.

    Look in the file for
    # E38 VE
    # ========================
    *CLC-00-959
    factor 0.0 5.0 .4 "{E38.SCALEDCORVE_DMA}/1000"



    When you find this, copy paste this right after that on a new line,

    # Strim Fuel Correction
    # ========================
    *CLC-00-999
    factor 0.0 2.0 .1 "{SAE.SHRTFT1}/100+1"




    So the new entry should look like this:

    # E38 VE
    # ========================
    *CLC-00-959
    factor 0.0 5.0 .4 "{E38.SCALEDCORVE_DMA}/1000"


    # Strim Fuel Correction
    # ========================
    *CLC-00-999
    factor 0.0 2.0 .1 "{SAE.SHRTFT1}/100+1"
    Last edited by wait4me; October 1st, 2008 at 02:01 PM. Reason: updating instructions
    "If you can leave a black mark on the pavement, from the exit of one corner to the braking point of the next one, you have enough horsepower."

  2. #2
    EFILive Reseller wait4me's Avatar
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    Then we have to look for an entry that looks like this:

    CALC.E38_VE F54B CLC-00-959 factor "E38 ECM" "E38 Scaled VE"

    You have to add this right after that on a new line,

    CALC.STRIM_BEN F54C CLC-00-999 factor 02-Wide "Strim Fuel % VE Fixer"


    So the entry should now look like this:


    CALC.E38_VE F54B CLC-00-959 factor "E38 ECM" "E38 Scaled VE"

    CALC.STRIM_BEN F54C CLC-00-999 factor 02-Wide "Strim Fuel % VE Fixer"
    Last edited by wait4me; October 1st, 2008 at 02:01 PM.
    "If you can leave a black mark on the pavement, from the exit of one corner to the braking point of the next one, you have enough horsepower."

  3. #3
    EFILive Reseller wait4me's Avatar
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    That is all that is needed for you to modify in that file, so you can just save it and then close it.


    Now you are ready to modify the Cal link file. This will turn on the RTAC stuff for your new STrim fixer.

    So look for your cal_link.txt file in Efilive main folder and open it up.


    Look for a section that says:

    ;Main VE Table
    B0101.ROW=SAE.RPM
    B0101.COL=SAE.MAP
    B0101.RRR=CALC.BEN_AUT1,

    Put CALC.STRIM_BEN before the CALC.BEN_AUT1,
    So it will now look exactly like this:

    ;Main VE Table
    B0101.ROW=SAE.RPM
    B0101.COL=SAE.MAP
    B0101.RRR=CALC.STRIM_BEN,CALC.BEN_AUT1,CALC.BEN_AU T2,CALC.BEN_FJO1,CALC.BEN_FJO2,CALC.BEN_LC11,CALC. BENLC12,CALC.BEN_LM11,CALC.BEN_LM12,CALC.BEN_PLX1, CALC.BEN_PLX2,CALC.BEN_TE1,CALC.BEN_TE2,CALC.BEN_W BC1,CALC.BEN_WBC2
    "If you can leave a black mark on the pavement, from the exit of one corner to the braking point of the next one, you have enough horsepower."

  4. #4
    EFILive Reseller wait4me's Avatar
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    now close that file after you save it.

    Then, you just open up the scan tool, and select strims and also make a new map just like you would the main ben filter, BUT, you just select the "Strim Fuel % VE Fixer" that is in the calculated section in the pids.

    Then you are good to go, It will be all set up for the pcm to use strims for correction.

    What you will see is, the pcm will have strims either positive or negitive, and it will just quickly make them all go to zeros.

    The Ve table will become VERY smooth, and the more you drive it, the more perfect it gets. Usually within 10 minutes of driving, the WHOLE ve table where you are in closed loop will be EXACT.

    Hope this helps...

    Jes
    "If you can leave a black mark on the pavement, from the exit of one corner to the braking point of the next one, you have enough horsepower."

  5. #5
    Lifetime Member 5.7ute's Avatar
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    Great work. I cant wait for my Roadrunner to turn up so I can give this a try.

  6. #6
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    Wish the P10 could get a RR and this... :(
    ~Erik~
    2013 Sonic RS Manual - 1.4L I4T E78, starting the mods
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  7. #7
    Lifetime Member Doc's Avatar
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    Thanks for sharing this Jes. This is for LS1 controllers? If so, just curious why you used the E38.xxx stuff??

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  8. #8
    EFILive Reseller wait4me's Avatar
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    IT is for any controller you have strims set up on. not just ls1. also it dont have to be used with a roadrunner. You can use it just like your Ben filter for the ve tables with the paste and multiply feature.
    "If you can leave a black mark on the pavement, from the exit of one corner to the braking point of the next one, you have enough horsepower."

  9. #9
    Lifetime Member Chalky's Avatar
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    Jesse:

    I did the copy and past but cannot get the pids to show up.

    Any ideas? Can you look at my files?
    Last edited by Chalky; January 29th, 2008 at 02:11 PM.
    2007 Silver Z06

  10. #10
    EFILive Reseller wait4me's Avatar
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    Do a search on your pc for the files and make sure you modify all that you find. there might be a different one somewhere on your pc. just make sure they all match the latest version.
    "If you can leave a black mark on the pavement, from the exit of one corner to the braking point of the next one, you have enough horsepower."

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