Thread: Knock Retard measurement

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  1. #1 Knock Retard measurement 
    GT Level Member Beelzeboul's Avatar
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    was monitoring my knock retard last night trying to figure out where to set an alarm for it so I know when its time to ease up or make adjustments.
    at max boost WOT I was getting .7 KR not a full degree am I measuring this properly.... I was told to expect between up to 4-6 KR out of a stock engine.

    with the light mods I had I wasnt sure whether to expect more or less but is 5 or 6 kr really displayed as .5 or .6 of a degree ?
    I'm sorry officer I didnt know I couldn't do that
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  2. #2 Re: Knock Retard measurement 
    GTP Level Member FriboRage's Avatar
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    exhaust flow mods are really good at killing kr, what mods do you have?

    All I have is plog and 3" downpipe and the highest kr I see is 2.5*
    --------------------------------------------------------------------------------
    2004 Grand Prix GTP Comp G: Intake, F+R plogs + downpipe, 1.7 YT Rollers, Overkill, F-body front brakes, drilled/slotted r1 concept rotors.
    Sport Edition Kv5 18x8
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  3. #3 Re: Knock Retard measurement 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    Not sure how good the torque app is at picking up kr.

    Maybe it doesnt knock that bad or the app is wrong.

    SMGPFC Member #1
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  4. #4 Re: Knock Retard measurement 
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    Get rid of that app and get a gauge lol.
    1998 GTP Sedan: Gen III, Speedy Daddy Headers, SLP Catback, Magnaflow High Flow Cat, Open Cone Intake, Autolite 104s, Debadged, more to come!
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  5. #5 Re: Knock Retard measurement 
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    The app works just fine.

    I assume you used the predefined extended PIDs, so as far as measuring it correctly you shouldn't have an issue.

    Some cars knock more than others and when they say 4-6 they don't mean cruising around town.
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  6. #6 Re: Knock Retard measurement 
    GTX Level Member blackflag's Avatar
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    Quote Originally Posted by Beelzeboul View Post
    was monitoring my knock retard last night trying to figure out where to set an alarm for it so I know when its time to ease up or make adjustments.
    at max boost WOT I was getting .7 KR not a full degree am I measuring this properly.... I was told to expect between up to 4-6 KR out of a stock engine.

    with the light mods I had I wasnt sure whether to expect more or less but is 5 or 6 kr really displayed as .5 or .6 of a degree ?
    My car is the same. Stock.
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  7. #7 Re: Knock Retard measurement 
    Moderator dsmuts's Avatar
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    Torque app works well for reading kr it reads the same as my scangauge and dhp.
    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
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
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  8. #8 Re: Knock Retard measurement 
    GTP Level Member KeithGTP03's Avatar
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    I have my annunciator set at 2* on the aeroforce.

    03 GTP...Its got pulleys and stuff.
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  9. #9 Re: Knock Retard measurement 
    GT Level Member Beelzeboul's Avatar
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    cool thanx keith n everybody I just wanted to make sure my .7 wasn't really a 7 and imma blow sumptin up
    only mods atm are deleted rear resonators , big spectre intake and ram air hood....does a thermostat count as a mod.
    I'm sorry officer I didnt know I couldn't do that
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  10. #10 Re: Knock Retard measurement 
    DUI BABY Bio248's Avatar
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    i constantly had upwards of 4-7* of knock before i got tuned nicely. still beat the car like it owed me money. never blew up.
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