Originally posted by thermalfi'd16 5 psi. a lot of autometer gauges' calibration setting messes up easily.
That's why I won't buy any gauges autometer makes. If they can't get a simple boost (psi) gauge right, why would you trust them on an A/F, oil, EGT, or other gauge, all of which are critical to the difference between you know what really is happening in your engine or just a close guess.