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Thread: Tuning question

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  1. #1
    Senior Member | IA Veteran Catnip's Avatar
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    Default Tuning question

    My car is running rich up top under boost, so the question is, do I keep making negative corrections to the SAFC (doesn't this also retard the timing?), or lower the fuel pressure? The AFR under boost with 0 corrections is about 10.0-10.3 while cruising the AFR is 15.3-15.6


    Air/fuel mods:
    680 PTE's
    2g maf
    afpr (set at 42ish PSI)
    aem wideband
    safc2
    dsmchip stage 3 chip (set for 680cc injectors and 2g maf)
    logger (SOON)
    '92 C2500 6.5 Turbo Diesel | '96 240sx

  2. #2
    Senior Member | IA Veteran Catnip's Avatar
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    thanks for all the help!
    '92 C2500 6.5 Turbo Diesel | '96 240sx

  3. #3
    JDM swaped shortbus Big J's Avatar
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    Default

    just pull fuel with the SAFC, if it pings, 0 it back out and make a gross adjustment w/ fuel pressure and then fine tune with the SAFC.

  4. #4
    Back from R&D Land
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    SAFC is not retarding the timing. Just pull fuel under boost. Your cruising AF is good/little lean.
    www.JKOBD.com
    00 Civic Street Car V2 coming soon

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