LTFT and outside temperature

On my 2007 C6 when I log LTFT in the morning when about 78 degrees and then again in the afternoon when it is about 98 degrees, I see some differences in the idle areas of the MAF cells. The lower cells seem to consistently go more negative in the hotter outside temperature. Is this normal? If not, where should I look?

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Originally Posted by jcrumpley

On my 2007 C6 when I log LTFT in the morning when about 78 degrees and then again in the afternoon when it is about 98 degrees, I see some differences in the idle areas of the MAF cells. The lower cells seem to consistently go more negative in the hotter outside temperature. Is this normal? If not, where should I look?

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Yes with hot lower density air less fuel required so trims will pull fuel. :)