Quote:
Originally Posted by tooblue
Is that your Air/Fuel at the bottom of the chart?
If so I wonder if you are going into a Catalytic over temp and pcm is dumping fuel. Not sure who is doing the tuning and may be something you run by them. If I remember correct there is a setting to disable the Cat overtemp.
Roger
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yes it is a/f in lambda,i have got that tip from others too have to test that.thanks