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You'll want to check your fuel pressure, also make sure you didn't cap off your fuel tank vent line (if you removed the charcoal canister). Easiest way to tell if your tank isn't being vented properly is when you go to the gas station and open the cap, it'll make the "psshhhhh" noise releasing pressurized air.
You can pull your plugs to see if they indicate a lean running condition.
Do you have a vacuum hose routed back to a catch can and then to intake after MAF to relieve some of the positive pressure in the crankcase?
If all this checks out you may want to pull the IACV for further inspection.
Also check to make sure your CTS is within spec, irregularities with voltage output of the CTS can cause a higher/irregular idle.
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