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your maf is a 5 volt sensor, read the fsm, it will tell you at idle you are supposed to be around .9 volts and at 3000 rpm you will read like 1.5-2.0 or something like that. have you actually tested the maf voltage or are you just reading off the safc II? are you sure you have the right in and out on your safc II? i think the only maf that will read that high is a q45 maf. if you would download the fsm, it will tell you everything you ever want to know about your sensors, all of them. start there, for example, you say your 02 read high ohms, fsm says to check for 3-1000 ohms for a good o2.
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