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No error codes? If trims don’t come down to +10 or so at 2500 RPM suspect MAF or fuel delivery.
You could give it a shot of a combustible( brake cleaner) into the intake( after the MAF maybe brake booster vacuum hose) to see if trims come down. If idle smooths out when adding combustible suspect fuel delivery. Check fuel pressure.
If MAF reading is off try cleaning with aerosol MAF cleaner. If no effect replace MAF.
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