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Old 05-04-2014, 03:22 PM   #32
jamesm
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Quote:
Originally Posted by steve99 View Post
Yes noticed similar mostly at idle where iat climhs in traffic fuel trim in lower band moves 4 to5 percent however need to look at if the temp comp is for sensor error at differnt temps or ita actually to compensate for the density change in the air.

the sensor is trying to measure mass of air colder air more dense so it most likely needs to add fuel so moves fuel trim positive.

not sure will have to think about it
This is very important... And why it's crucial that you filter out high IATs when doing the calibration.
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