2 bar map showing 180kpa at idle

Trying to get a startup tune in a 2002 silverado turbo. 2 bar OS is applied, offset and linear are what I believe to be correct based on searching....KOEO shows 0kpa on the 2 bar pid. When the truck cranks over, it starts reading then the engine fires. It's running a little rough as I'm just getting started, but the 2 bar map pid is fluctuating from around 165-185kpa at idle. Adjusting VE in that range clears up the rich condition.

We have 2 maps, one totally unmarked from Rock Auto and the other is marked Delphi PS10000 10414. I believe they are both incorrect and have advised getting a cobalt baro sensor from the gm dealership. The stock map and OS read correctly. I'm not logging map (sae) or maf pids in the scanner.

I'm not on my laptop right now so I can't post a file but does anybody have any suggestions what else to look into?

Sounds like it's actually a one bar sensor.

Thanks. That's what I suspect as well. The delphi sensor part number shows up as a GM V6/V8 sensor for several trucks and a few north star engines. The trucks owner supplied both sensors and "guarantees" me they are the correct parts...I'm picking up one I know is correct tonight and also grabbing a box of "I told you so" just in case.