Cruise Control Lambda Display

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On some vehicles the Cruise Control 'Set' button can be used to show the current lambda on the tachometer.  The display is in air-fuel ratio x 1000 offset by 10,000.  eg 14.7:1 = 4700 rpm, 13.2:1 = 3200 rpm


In order for the lambda to be shown the Cruise Control 'Main' switch should be off and the clutch not depressed.