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Thread: Engine Mapping & Air Fuel Ratio?

  1. #1

    Engine Mapping & Air Fuel Ratio?

    Anyone got any info about mapping. I've got the wideband O2 sensor setup now, and can twiddle with my fueling.

    What sortof lambda values should I be aiming for? I heard maximum power is around 12.5 or something but i'm not really clued up on mapping at all.

    Any advice, links or info welcome

    Cheers

    Simon

  2. #2
    Quick update.... on the present 'map'

    At the moment its running 14.7 AFR on idle town driving heading towards 12 when booting it, and around 10 just below redline (seems a bit rich to me?)

  3. #3
    14.7:1 at idle and 11.5:1 under boost, as standard under boost goes really rich 10:1 which decreases power somewhat, really need safc or ecu upgrade to map it

    if you look here

    http://www.mrcontrols.com/primers/power.htm

    theres loads of info

  4. #4
    I'm running an n/a at the moment (no supercharger as yet :( ), and i'm using an SAFC-II to map the fueling.

    Cheers for the link

  5. #5
    would of thought if na best to run around 13:1 for maximum power but need rolling road really

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