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.