Yeah I just realized fuel pressure issue wouldn't make sense. Is there any chance it could be a bad coolant temp sensor causing the computer to see a cold engine and dump fuel? If yours is the same as mine there are separate sensors for the gauge and the PCM so the gauge can read correct and the PCM can still be getting bad info.
I can't believe it's running that bad and not throwing codes. I'm just trying to come up with anything other than the opti that could cause it.
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