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Idle goes lean in open loop

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Old Jul 12, 2008 | 10:48 PM
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02WS6FREEBIRD's Avatar
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Default Idle goes lean in open loop

While driving in open loop the AFR is a little lean like in the low 15's but when sitting and at idle the afr goes real lean in to the 17's, I have DFCO off correctly I think, does any one know what is wrong?

BTWI am reading off a AEM WB gauge.
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Old Jul 13, 2008 | 03:24 AM
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You are obviously tuned for open loop at idle and your fuelling is incorrect if that is not what you are commanding. Your MAF and/or VE is not tuned correctly.
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Old Jul 17, 2008 | 01:50 AM
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Think it is me VE...thanks
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Old Jul 17, 2008 | 06:49 AM
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if the the AFR is fine at girst when idling and then tapers lean, look at your IAT, it could be getting heat soaked.
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