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Thread: Timing or Fuel for WOT?

  1. #1
    Advanced Tuner domestic rice's Avatar
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    Dec 2006
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    MB SC
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    Timing or Fuel for WOT?

    Well its been a long road, but I have this thing starting, idling, and driving GREAT! Thanks to all those who have helped. Now for the last thing that is stumping me. WOT..... I am getting a mid 12s AFR with timing only in the high teens or low 20s, yet still getting a little knock. Running 93 in it and this does not make sense. Would the 111 deg IAT make it this bad? What direction should I go, lower timing or richin up afr?
    99Z A4 w/ SS LT's, h/f cats, magnaflow catback, port/polish t/b, egr deleted, ls6 intake, lid, 3.73's, hpt, performabuilt level 1 tranny, 3600 stall, Stage 2.5 (5.3 heads), Torquer 2 cam, 42# reworked injectors, TR6 plugs.

    2007 Avalanche LTZ - Catback and Eibach springs

  2. #2
    Tuning Addict WS6FirebirdTA00's Avatar
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    Jan 2005
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    Concord, NC
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    8,093
    Looks like tip in knock. Put in the 2001-2002 KS tables and see how that does.
    Sulski Performance Tuning
    2000 WS6 M6 - LS6 (long block, refreshed top end), 10.8:1 CR, 90 mm ported FAST, Exo-Skel, 227/232 cam, QTP HVMC, EWP, GMMG, 9" w/4.11s
    2018 Sierra SLT 5.3L A8 - Airaid intake tube, GM Borla catback, L86 Intake/Ported TB