Thread: Pcm, more knock than before?

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  1. #1 Pcm, more knock than before? 
    JB122894
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    Default 11-09-2013
    So I just installed my 3.4inch pulley on my car that has headers, al104s, and FWI. I drove it yesterday untuned and got 2* of KR at WOT. I installed my 97 Pcm from Reptile (and swapped the knock module so no need for a case relearn) I now have 5* of knock. Do I need to drive it normal longer or should I be looking for a parameter on my scan gauge to see if something is wrong. Any help is appreciated, thanks in advance.

    1997 Grand Prix GTP
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  2. #2 Re: Pcm, more knock than before? 
    hensleya1
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    Default 11-10-2013
    Swapped knock module? New sensors may be overtorqued (or undertorqued). IIRC make sure they're at 14 ft/lbs.
    2003 GT Limited Edition 199k - The $600 winter beater.
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  3. #3 Re: Pcm, more knock than before? 
    matt5112
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    Default 11-10-2013
    This is like the second thread of the same topic in the past two weeks.

    Reality, stock tune is that great. GM calibration knew what they were doing.
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  4. #4 Re: Pcm, more knock than before? 
    dsmuts
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    Default 11-10-2013
    Quote Originally Posted by hensleya1 View Post
    Swapped knock module? New sensors may be overtorqued (or undertorqued). IIRC make sure they're at 14 ft/lbs.
    Not knock sensor knock module. Only 97 has them. I got more kr on my zzp tune then stock
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
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