Thread: what would cause IPWs to drop randomly when at WOT?

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  1. #1 what would cause IPWs to drop randomly when at WOT? 
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    what would cause the IPWs to drop drastically while at WOT? can rule out injectors as this happened still when i was running 65lb and recently switched to 80lb

    while at WOT my IPWs (running 65lb) would avg 14-15ms but then randomly drop to like 11mS where i would see my WB go from 10.9 to like 12-13AFR and i instantly let off the throttle to save my motor of course lol. with the 80lb it avg 10-11ms and it dropped to 9ms and again WB showed it went lean towards the 12-13AFR mark.

    currently running new 80lb inj, low mileage fuel filter, racetronix 255lph FP, zzp gen 1 fuel pump rewire....im thinking the rewire isnt enough voltage?
    old setup-Z7 Turbo Kit w/T66, A2A I/C, stock cam & valvetrain/LS1 MAF/Ported 99TB/PowrTuner/AFC/Devils Own/LS1M Scanner/PRJ FP/42# Injs=12.3@118mph street tires -
    (Sold)BACK TO M90 Vs cam w/3.5" pulley/meth/25* timing+bolt-ons
    01 Z28 A4 HP-self-tuned, LTs, FTRA, 3600stall 12.3@112mph
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  2. #2 Re: what would cause IPWs to drop randomly when at WOT? 
    GrandPrix Junkie PurpleGuy's Avatar
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    Unrelated...you Freemo?
    2001 Regal GS, PLOG, 3" DP, 1.9's/L76 springs. 21* of timing on a 3.4"
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  3. #3 Re: what would cause IPWs to drop randomly when at WOT? 
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    Quote Originally Posted by 4THGENCAMAROFAN View Post
    Unrelated...you Freemo?
    yes. u saw my post on FB didnt you?
    old setup-Z7 Turbo Kit w/T66, A2A I/C, stock cam & valvetrain/LS1 MAF/Ported 99TB/PowrTuner/AFC/Devils Own/LS1M Scanner/PRJ FP/42# Injs=12.3@118mph street tires -
    (Sold)BACK TO M90 Vs cam w/3.5" pulley/meth/25* timing+bolt-ons
    01 Z28 A4 HP-self-tuned, LTs, FTRA, 3600stall 12.3@112mph
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  4. #4 Re: what would cause IPWs to drop randomly when at WOT? 
    youtu.be/xhrBDcQq2DM FoSHO99's Avatar
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    If your IPW's are dropping, it's not a fuel starvation issue, it's probably something in the pcm that is telling it to cut fuel. If your IPW's are hitting 24 and it's leaning out then it's fuel deprived.

    Post up a scan on google docs or something.
    2001 GTP PT61 Turbo, E85, Stock Motor
    2011 Chevy Cruze MT6 1.4L Turbo
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  5. #5 Re: what would cause IPWs to drop randomly when at WOT? 
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    i would but the scans in the car ATM. its not even remotely close in hitting 24mS

    edit-and i have the fuel cut increased to like 6700RPMs. the scans via LS1M, which basically is limited on parameters.
    old setup-Z7 Turbo Kit w/T66, A2A I/C, stock cam & valvetrain/LS1 MAF/Ported 99TB/PowrTuner/AFC/Devils Own/LS1M Scanner/PRJ FP/42# Injs=12.3@118mph street tires -
    (Sold)BACK TO M90 Vs cam w/3.5" pulley/meth/25* timing+bolt-ons
    01 Z28 A4 HP-self-tuned, LTs, FTRA, 3600stall 12.3@112mph
    Reply With Quote  
     

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