Thread: Knock decay glitch in HPT?

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  1. #1 Knock decay glitch in HPT? 
    GT Level Member 94GrandPrixSE's Avatar
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    While I was at the dyno I was adjusting my knock attack and decay. I tried to modify the high load decay table, which looks like this on a stock tune.

    136 136 23 23 23 23 23 36 36 36 36 36 36 36 36 36 36

    No matter what you enter below 256 it automatically sets it to 256.

    256 256 256 256 256 256 256 256 256 256 256 256 256 256 256 256 256

    In the bottom right hand corner where it tells you the high and lows of the table it says 256 to 62,640. Currently its at 256 and the blips off KR drop of nicely. So my question is why is this? Based on what the Decay table does im at the lowest, so my timing recovers slowest I can set it to. Has anyone else experienced this?
    02 GTP - Cartuning Turbo Kit VS67 3" DP, 80#INJ, N*,LQ4 MAF, Custom Cam, Roller Rockers, 130#, P&P Heads, Meth, AL103's, Corn fed, 522WHP on a mustang dyno, HP Tuners by me.
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  2. #2 Re: Knock decay glitch in HPT? 
    GT Level Member 94GrandPrixSE's Avatar
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    Anyone try this? Still a mystery.
    02 GTP - Cartuning Turbo Kit VS67 3" DP, 80#INJ, N*,LQ4 MAF, Custom Cam, Roller Rockers, 130#, P&P Heads, Meth, AL103's, Corn fed, 522WHP on a mustang dyno, HP Tuners by me.
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  3. #3 Re: Knock decay glitch in HPT? 
    GXP Level Member GTPpower's Avatar
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    Sounds to me like it's an error. Have you tried updating hpt?


    2001 GTP Drag Car - XPZ, Tischler heads, Upsidedown M90 IC'd, e85, Gen V, 2.3 w/ 5%OD
    2005 F350 6.0 - studded, deleted, tuned
    2001 GTP - cam, headers, nitrous, stock trans - 11.83 @ 116 <$2k in mods - sold
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  4. #4 Re: Knock decay glitch in HPT? 
    GT Level Member 94GrandPrixSE's Avatar
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    Quote Originally Posted by GTPpower View Post
    Sounds to me like it's an error. Have you tried updating hpt?
    yes up to date with the current software
    02 GTP - Cartuning Turbo Kit VS67 3" DP, 80#INJ, N*,LQ4 MAF, Custom Cam, Roller Rockers, 130#, P&P Heads, Meth, AL103's, Corn fed, 522WHP on a mustang dyno, HP Tuners by me.
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  5. #5 Re: Knock decay glitch in HPT? 
    GXP Level Member GTPpower's Avatar
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    I'd send support an email and see what they say.


    2001 GTP Drag Car - XPZ, Tischler heads, Upsidedown M90 IC'd, e85, Gen V, 2.3 w/ 5%OD
    2005 F350 6.0 - studded, deleted, tuned
    2001 GTP - cam, headers, nitrous, stock trans - 11.83 @ 116 <$2k in mods - sold
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  6. #6 Re: Knock decay glitch in HPT? 
    Donating User Swiggles's Avatar
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    I've had this problem with a few tables, email support and they will fix it
    No more GP 04 Impala SS Indy:
    Gen V 3.4”|FWI|N* TB lq4 MAF|1.9 Modded Rockers|F&R Plogs|ZZP 3" Catted DP|ZZP 2.5" Catback|
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