You ask the question:
A pid is log data that is read from the PCM... so I'm confused by your question.is there a PID that tells this COS to switch to 2/3 bar?????
I see from rereading your post that you are editing the scaler... you may have to also edit the offset.
I still don't understand what your question is asking.
Are you asking how does the COS know to go from 1-bar operation to 2-bar and beyond...?
The COS knows to go the the Boost VE table when MAP exceeds 105 kPa (the last column in VE table).
Ah, I think now I know what you asked.
I see the confusion, PIDs are parameters to log in the Scan tool. The calibration usually refers to the program/tune currently IN the controller, when you change the calibration you're changing tables and/or parameters.
~Erik~
2013 Sonic RS Manual - 1.4L I4T E78, tuned, turbo mods, etc.
2008 TrailBlazer SS 3SS AWD Summit White - LS2 E67/T42, bolt ons, suspension, etc.
2002 Chevy TrailBlazer LT 4X4 Summit White - 4.2L I6 P10, lifted, wheels, etc.