Quote Originally Posted by Kitch View Post
I'd like to create a virtual vacuum gauge in TP where 100KPa = 0" of vacuum, it kind of works opposite to KPa readings (probably not the best description).

My ADX has "MAP" in values as well, just like your screen shots.
How would I reference the KPa shown there? Does the packet offset setting reference the value used for KPa or the KPa calculation?
Vacuum needs to have Baro included in the calculation. Needs to use Baro as the Zero vacuum point and then subtract current map. So if the baro is 95 KPA and you are running at 45 KPA you have 50 KPA of vacuum. So Baro and subtract current MAP gives you vacuum. You can then convert KPA to in/hg if you desire.