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Thread: Knock Sensors off

  1. #1
    Lifetime Member waterbug1999's Avatar
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    Default Knock Sensors off

    On the girlfriend 98 stock TA (a few bolt ones) and she pulls like 3-4* of knock.
    She is racing tomorrow and I will be putting in 102 octane and would like to turn on of the knock sensors since i am pretty sure its false knock (heard/y-pipe chatter)..

    What would I change to do this... Thanks.

    1999 Trans Am. 10.71 @ 126 - stock bottom end-

  2. #2
    Junior Member projectblackbird's Avatar
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    --------------------------------------------------------------------------------

    No, but I do adjust things to make KR less intrusive.
    I drop the Knock Fast Attack Rate by 30%
    and increase the Knock Retard Recovery Rate by 50%
    __________________
    this is what i was told

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    Lifetime Member waterbug1999's Avatar
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    Quote Originally Posted by projectblackbird View Post
    --------------------------------------------------------------------------------

    No, but I do adjust things to make KR less intrusive.
    I drop the Knock Fast Attack Rate by 30%
    and increase the Knock Retard Recovery Rate by 50%
    __________________
    this is what i was told
    KR helps to indicate detonation if you picked up bad gas so you dont hurt the motor... So, if im not going to turn them off knowing I am running 102 then why not just up the timing 3-4 to compensate? no need just turn them off..

    I dont have a pre=header/y-pipe chatter log so i dont know where she was previously. 98's are known for some knock but I don tthink 3-4*.

    1999 Trans Am. 10.71 @ 126 - stock bottom end-

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    Junior Member projectblackbird's Avatar
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    i have the same problem with my 98! i have adjusted the sensitivity and logged less retard! i know its the y-pipe. but i could be valve train noise or anything! i'd hate to se anyone blow a motor for not having a warning

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    Lifetime Member waterbug1999's Avatar
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    Quote Originally Posted by projectblackbird View Post
    i have the same problem with my 98! i have adjusted the sensitivity and logged less retard! i know its the y-pipe. but i could be valve train noise or anything! i'd hate to se anyone blow a motor for not having a warning
    I hear you 100%... I wish I could have taken a log before and after the full exhaust mod to eliminate one thing or the other. Just thinking it will be fine being all stock (interanally) and 102 race gas. She has been on my ass all year to get her car in the 12's, so im putting on my bogarts on and adjusting KR.

    1999 Trans Am. 10.71 @ 126 - stock bottom end-

  6. #6
    Junior Member projectblackbird's Avatar
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    my stock car went 12.05 ! too bad i can't get my tune right now to get back to that spot

  7. #7
    Lifetime Member waterbug1999's Avatar
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    Quote Originally Posted by projectblackbird View Post
    my stock car went 12.05 ! too bad i can't get my tune right now to get back to that spot
    LOL.. 12.05? You must have taken off a shit ton of weight or slaped in a 5k stall verter....

    1999 Trans Am. 10.71 @ 126 - stock bottom end-

  8. #8
    Junior Member projectblackbird's Avatar
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    lol! just a 125 wet kit

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    Lifetime Member SSpdDmon's Avatar
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    Quick and derty: Zero out B6204 and B6205


    Not advising you do this. But, that's how to prevent timing from being pulled IIRC.

  10. #10
    Lifetime Member waterbug1999's Avatar
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    Quote Originally Posted by projectblackbird View Post
    lol! just a 125 wet kit
    LOL... forgot the mention that.

    1999 Trans Am. 10.71 @ 126 - stock bottom end-

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