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Thread: 94 F-body LT1 solving problems/tune

  1. #16
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    5. DISABLE AIRpump
    Besides clicking OFF at least two switches / flags, you must ALSO raise the Min Coolant Temp to Enable AIRpump to well over 117.5C / 243.5F.

    Generally speaking, if you want to disable anything, you often need to take more than one step, possibly two or three or more to do so.

    To wit:
    1. I think Catalytic Protection can be disabled with only one constant, but just in case, I'd adjust four, as GM did.
    THEY are NOT Lying to You. You are NOT Lying to Yourself. You ARE Being Lied to - BY Your Self
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  2. #17
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    AIR pump done.

    Regarding CAT protection
    Factory Cat protect AFR is 12.2. Is it bad for the whole engine cooling? And what about torque? I know that it raises a little when it goes to rich. Just about 11.8-12.8

    There are Low/High boundaries and Low/Mid/High Pressure parameter. Should i mod them and to what values?

    Is it good idea to disable cat protection? Or it's good to leave it alone? If only I'm right in everything that I said above.
    I remind that I've deleted CAT.
    Last edited by yoheer; 2 Weeks Ago at 10:39 AM.

  3. #18
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    i honestly don't see much point in cat protect mode even with a cat, but if you have no cat, there's definitely no reason to leave it enabled

  4. #19
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    Quote Originally Posted by yoheer View Post
    Regarding CAT protection
    Factory Cat protect AFR is 12.2. Is it bad for the whole engine cooling? And what about torque? I know that it raises a little when it goes to rich.
    Just about 11.8-12.8

    There are Low/High boundaries and Low/Mid/High Pressure parameter. Should i mod them and to what values?

    Is it good idea to disable cat protection? Or it's good to leave it alone? If only I'm right in everything that I said above.
    I remind that I've deleted CAT.
    GM uses the following values for vehicles that were never equipped with catalytic converters:

    Min Coolant Temp for CAT Protect = 150C
    CAT OverTemp Threshold (Low Baro) = 1065C
    CAT OverTemp Threshold (Mid Baro) = 1065C
    CAT OverTemp Threshold (High Baro) = 1065C
    CAT OverTemp Air Fuel Ratio = 12.2 AFR

    (Although I'd raise the CAT OverTemp Air Fuel Ratio to 14.7 AFR without any fear.)
    THEY are NOT Lying to You. You are NOT Lying to Yourself. You ARE Being Lied to - BY Your Self
    The Last Psychiatrist, aka Alone


  5. #20
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    you convinced me guyz )))
    Want to know your thoughts about egr and BLM locker.

    After all Im gonna mod timing, AFR and everything to make the engine more responsible and add some HP.
    I will need advices.
    Last edited by yoheer; 1 Week Ago at 02:43 PM.

  6. #21
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    Disabled EGR

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