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On Probation
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most cars o2 sensors vary between 10 and 1000 mv with 500 mv being the sweet spot. A tester/scan tool may show cross counts which tells you how healthy the sensors are. Low cross counts =lazy sensors ...high mv =rich ....low mv = lean....850 to 950 mv at WOT for a few seconds is okay....5 to 9 g/s on the MAF at idle is norm for GM v8...i do not have the specs for po......best i can do
 
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