So... Check engine light came on a couple weeks ago. Codes were not super helpful - P0455 - evap leak, and P0171 - System too lean.
I reset, and they came back fairly soon after.
I did some digging and managed to find P0661 - Intake Manifold Tuning Valve Control Circuit low. This was obviously the most specific. I think this came up when I did a check with the scanner.
I ended up checking the Intake Manifold Control Valve, sure enough, it was testing infinite resistance meaning open circuit. From what I read, that means failed.
I used this to locate it and understand what needed to be done to change it:
https://www.youtube.com/watch?v=Vu6njFBISro
It is the orange/brown one.
The replacement used the same nut from the factory... It didn't fit great. Took a little to get it on but after that, it seems fine. Hopefully this is fixed.