"Yes, elevation will affect boost (approximately 0.5psi per 1000ft) but "elevation" differences do not register on a boost gauge. Only an absolute pressure gauge which measures both atmospheric pressure (14.7psi @ sea level) and boosted supercharger pressure can indicate an elevation change." >>> does this make sense? I'm not sure why I found this interesting, I see total psi variances on my Map signal and started the above questions. So either air pressure sensors (like ours) are effected? or he is talking about a different "boost gauge" ?? or I'm seeing variances from another variable.

http://www.kennebell.net/KBWebsite/C...esAndCures.pdf << good lil SC read.

 

Barometric pressure in your tables; Shows (10.2) when ever I search anything baro/pressure/altitude I get an Altimeter...ex. 29.90/29.92/30.10 How did you get 10.2 <<<(Absolute gauge)??

 

This is a Subaru specific spreadsheet I made. This is what is displayed as absolute via the ECU. Whatever the ECU sees (and where I'm tuning for), I input that number.