Intermittent P0107 MAP circuit low EJ207

[StimpyV2]

I’m currently having an issue with my V8 207 swap. It has operated fine for years, but now I have an issue. I get a P0107 code that actively disappears on acceleration, when I’m off the gas or idling the code comes back. During the times when the CEL is on the AFRs are very lean (from my AEM wideband) and runs very bad.

I’ve replaced the front o2 sensor with a new denso, cleaned the MAF, and inspected for vacuum leaks. Should I be looking at the MAP sensor? TPS?

I’m at a loss at the moment, I’m 500 miles my house so I don’t have access to my garage, but I do have logging abilities with romraider.

If someone could help out I’d appreciate it.