Just got mine fitted and it (please pardon my ignorance with these...) is a smoke autogauge which has a range of 30 to 0 to 30. Get what i mean?!
At idle, its sitting at -20? Then on a good revving it goes to 0 then out and about driving it peaks at 9 and settles at about 7. I know the peaking is overboost but should it read so low on idle? Its all connected up right and tight.