Help with M60B40 AFR

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  • 90-E34-M5
    Noobie
    • Sep 2015
    • 21

    #1

    Help with M60B40 AFR

    Hi everyone,

    This is the dyno result for my M60B40 a few days ago.

    The engine is down on compression (150 to 170 psi) and this dyno seems to consistently under read , it's hot here and I don't think the numbers are being corrected but the dyno operator says it is.

    I burned a new chip using a 540 manual non lambda bin file , my Indonesian assembled E34 540 doesn't have lambda

    Anyway, I have a WAR chip coming and I want to correct the AFR curve

    Is these a rule of thumb I can use to increase and decrease fuel flow by reference to the AFR curve and my target AFR ?



    Last edited by 90-E34-M5; 09-25-2015, 10:56 PM.
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