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5.3 acting wierd at WOT. E38 PCM

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Old 11-25-2015, 12:13 PM
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Default 5.3 acting wierd at WOT. E38 PCM

Hello all,

If this is the correct place to post this, my silverado truck has a Dr jekyl side. I know this is more of a car forum but I thought the PCM aspects might not differ all that much.
Basically, all 02s report stuck lean as well as a MAF fault at WOT. Meanwhile if you drive it like a Sunday cruiser it throws none at all.
Lastly, the more fuel I give it, the faster it goes. I'm about to max out the stock fuel system. I think it's weird. Any thoughts?



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