Trouble getting hemi running right

Trying to catch up some as I do not frequent this forum much...

How about some datalogs and perhaps a tune file?

I have a 5.7L running on a Gold Box, I can probably look over your settings for a gut-check. I'll echo the other responses, you must have exhaust in order for your o2 to provide any reasonable information.

You mentioned the "pressure sensor" read 89? I assume you mean MAP, and if it's reading 89kPa with the engine running (and not at high load), then you have an issue there...

The MS does not "need" a vac referenced regulator, it'd be nice, but it's not your problem. I have the LT1 filter and allow the ECU to reference pressure and adjust accordingly. However, I put ~3,000mi on without any fuel psi ref.