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Thread: No PE at WOT???

  1. #1
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    No PE at WOT???

    Well out of no where my truck does not go into PE at WOT.

    It was doing alright but i was going to lean a little bit at top above 80mph+ because it was at 11.2, So i punch it from around 10 miles and around 60 70 miles the truck bog down. I had my eyes at my AFX wideband when the truck bog down airfuel jump to 14.3 so i let go the gas.

    What could it happen i was searching around but did't find nothing.

    2010 5.3 single cab
    76mm on 6 lbs

  2. #2
    Senior Tuner Higgs Boson's Avatar
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    don't watch the wideband, watch commanded afr on your laptop. that will tell u if it's in pe. if its going lean you are out of injector and/or fuel pump.

  3. #3
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    My commanded afr was not changing on WOT it will stay at 14.7 and that was cousin the lean part.

    What i did i read the pcm and loaded back and it work.

  4. #4
    Senior Tuner IDRIVEAG8GT's Avatar
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    You had a writing error that caused that?
    Gray Ghost- The abomination. 2007 Chevrolet Silverado CCSB. 98mm turbo, nitrous, 428LSX, Rossler 80E with a brake. Finally finished. 23 psi, no numbers, Slow as hell.

    PBM G8- Aluminum 364, twin Precision 67/66 turbos, 6L90 trans swap, CTS-V/Vaporworx fuel system, slowly making progress.

    Dads 2011 CTS-V- Stock bottom end, stock heads, LS9 cam, pullies, ported blower, ported TB, D3 goodies, and lots of nitrous.
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    Caterpillar 50 Forklift- Duramax swap

  5. #5
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    I dont remember doing a write calibration, I remember doing a night before but next day i try it out and it was doing good till later on i punch it and it happen.

    Well anyways it working now.
    Last edited by 02Ls1; 08-06-2012 at 12:49 AM.

  6. #6
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    i was working on a turbo 4.8 tonight and had the map kpa trigger at 102 kpa. did just fine the first time. 3-5 mins later it would not trigger pe. didn't pull over and flash it between that time.

    changed the pe map trigger to 110, wouldn't go into pe.
    The most hated, make the most power.
    93 Ranger. 5.3 D1X. 1069hp.