Finally switched to 3-bar OS, need some advice, please

[Vetal]

Finally I've applied 3 bar OS, put some ballpark numbers in VE table and drove a bit. Immediately I've noticed that at the same load it shows some 7-9 KPa higher than I saw with stock MAP, also the car runs richer. My MAP offset is 10KPA (default). Before I was cruising at about 40KPa and idling at 42KPa, now 46 and 48KPa. Maybe I should bring this offset down to some 4-5KPa? I've tried a bit with offset = 4KPA and it seems to run a bit lean but closer to where it was.

[edcmat-l1]

What sensor are you using? Do you have the proper data for it? Did you check you KOEO Kpa on your stock MAP and OS? This is always a good idea before swapping sensors and/or OSs. Then you can compare it to your new Kpa KOEO.

[Vetal]

Bought it as "Exact replacement for the GM P/N 12223861 sensor" here: http://www.ebay.com/itm/230598146340?item=230598146340

Well I guess what I was asking is proper data for offset
yesterday I've set my offset to 6KPa. That got back my idle/cruise readings back approx. to where they were, and also got me 102KPa at KOEO which was exactly what weather forecast was showing for my area.
So I guess, 10.33 KPa was too high for 12223861.
Or am I doing smth. wrong?

[edcmat-l1]

Bought it as "Exact replacement for the GM P/N 12223861 sensor" here: http://www.ebay.com/itm/230598146340?item=230598146340

Well I guess what I was asking is proper data for offset
yesterday I've set my offset to 6KPa. That got back my idle/cruise readings back approx. to where they were, and also got me 102KPa at KOEO which was exactly what weather forecast was showing for my area.
So I guess, 10.33 KPa was too high for 12223861.
Or am I doing smth. wrong?

Sounds like you're on to it. Funny how the other offset looked off.

[Vetal]

You mean 10.33KPa? Yeah, it seemed wrong right away. Someone found that offset might be 3.6KPa, but I tried 4 and it was a bit lean.