couple questions about MAP

[sportinawoody]

1st, MAP @ zero airmass, would i be correct assuming zero to mean engine not running? if thats the case then why is there an rpm scaler ?

2nd, calculated MAP max, stock is 15 something. im assuming this is equivalent to tb opening or 101 kpa since thereotically this is equivalent to 14.7psi. when adding boost should this be moved up to accomodate max boost seen ?

3rd, I have a 3bar sensor setup dialed in and logging and when in boost the calculated map is mostly very close to reported MAP but when cruising , calculated never goes negative while map sensor reports negative (vacuum).

4th. are the units in/hg ?

Been doing a lot of reading to learn about this subsystem and im at the point of wanting to address this so forgive the newb questions. trying to find the best, not easiet way to dial in these tables. Any other relevant info is welcome. maf and fuel are dialed in but i have a few transient issues that i think this would help address