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Thread: 2-bar Timing Adjustments

  1. #1
    Tuner in Training
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    2-bar Timing Adjustments

    The high octane timing table only goes up to 1.2 g/cyl. I hit this with 1lb of boost. Is there basically no way to ramp timing up and down based on boost? The numbers you put at 1.20 g/cyl stay steady as you go into max boost? I am seeing more than 2.0g/cyl

  2. #2
    Advanced Tuner TXZ0603's Avatar
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    2003 Z06
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    25# Boost

  3. #3
    Tuner in Training
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    Come on. Sombody has to be able to verify this.

  4. #4
    Senior Tuner Frost's Avatar
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    That's it; you max out. There are some tricks such as halving IFR and VE and other airflow tables, but I still expect that you'd max out the table.
    Steve Williams
    TunedbyFrost.com


  5. #5
    Advanced Tuner TXZ0603's Avatar
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    Frost, could you eloborate some on which you speak?

    Thanks
    2003 Z06
    Forged 347
    PTE Billet 67/65 Turbos
    FMIC / Dual 50mm Tial BOV's
    ID 1000 Injectors
    RSI Stage 4 Fuel System
    07 Z06 Cam
    Tripple Nozzle Meth
    ACT Twin disk clutch


    25# Boost

  6. #6
    Tuning Addict WS6FirebirdTA00's Avatar
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    If you half the IFR you will have to cut back your VE by half as well (faking small injectors makes you rich, meaning the VE will need to be lower).

    This is a hacked way, but if it is really needed is about the only way around it. This means if you see 600 g/sec then you should now see about 300 g/sec.
    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

  7. #7
    Senior Tuner Frost's Avatar
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    You can scale back quite a ways, you just really need to keep up with what you are doing. It will crunch down the whole timing table (and many others!)
    Steve Williams
    TunedbyFrost.com