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  1. ECUFlash / OpenECU
    Does anyone know what exactly "Fuel Trim in Use" is? My guess is that it's the current LTFT being used - either CruiseLTFT or IdleLTFT. Is this accurate? Moreover, if that is the case, when scaling MAFs, would it be more accurate to use STFT+Fuel Trim In Use rather than STFT+CruiseLTFT? Discuss.
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