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Old 10-02-2010, 01:46 AM   #7 (permalink)
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Location: Drayton Valley, Alberta, Canada
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duramax - '05 Chevrolet Silverado LT
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Hmm... I was aware that the direct-injection GM engines used lean-burn, but I am not aware of any conventional port-injected GM engines that use lean burn (in North America anyway).

For those of us running stoic, watching MAF flow is also a good indicator, as air-mass is directly proportional to fuel-mass when an engine is in closed loop.
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