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What's A Safe Air Fuel Ratio?

Discussion in 'Turbo Tech Questions' started by Z06killr, May 23, 2009.

  1. Z06killr

    Joined:
    Jul 14, 2004
    Car is a 5.4 DOHC with 9:75:1 compression. 24lbs boost...car makes 850whp/733wtq through a 4R70W

    What would be a safe air/fuel ratio and at what a/f ratio would you most likely begin to experience detonation?

    :) Just looking for opinions/experiences..

    Thanks.
     
    Z06killr, May 23, 2009
    #1

  2. 96b.boy

    Joined:
    Oct 20, 2008
    10.9-11.3 would be safe
     
    96b.boy, May 24, 2009
    #2

  3. Turbo Drag Radial

    Joined:
    Mar 4, 2007
    depends on the system, what efi system are you using?
     
    Turbo Drag Radial, May 24, 2009
    #3

  4. Z06killr

    Joined:
    Jul 14, 2004
    EEC V Engine Management with a draw through MAF

    So if the a/f reached 12.0 to 12.5 throughout the higher RPM range (5600-7000) would one expect to damage an engine?
     
    Z06killr, May 24, 2009
    #4

  5. gtrpwr

    Joined:
    Nov 1, 2008
    you may very well get away with a 12.5:1 but thats cutting it too close for comfort in my opinion
     
    gtrpwr, May 24, 2009
    #5

  6. Cablebandit

    Joined:
    Jul 5, 2004
    mine likes 12.0-5 on c16...slows down if its richer in the heat
     
    Cablebandit, Jun 21, 2009
    #6

  7. BlackMagic94

    Joined:
    Apr 23, 2003
    This question cannot be honestly and correctly answered without knowing what fuel is being ran.
     
    BlackMagic94, Jun 22, 2009
    #7
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