Well all 3 of them depend on how your driving really!!!
The far right guage (boost guage) When not accelrating/idle will be at far left on about -500, and when foot floored and on full boost it will be newhere between 500 - 700 or posibly off scale depending what boost your running. And it will constantly flicker between plus and minus like any othe rboost guage.
middle guage is oil pressure guage. This varies with engine temp and revs but as a rough estimate, should be around 6 on startup from cold, then settle to 4 when cold, then sit between 2 and 4 on idle.
The far left guage is oil temperature. Depends how you drive, harder you drive hotter it gets. Rough driving it should be at about 80-90 degrees.
hope that helps
1000 miles and still intact