hey guys, well i was given a turbosmart type III B.O.V. a while back off a mate who has taken it off his car, and he said to try it on my car to see if it worked good. anyway i didnt have the adapter for it , so i just never fitted it, but on the weekend my other mate gave me one off his old skyline that he had made up, so i fitted it up and took it for a spin, everything seems ok, except for 1 thing, on the stock indash boost gauge, where its says +7 / -7. The needle seems to be sitting just above the -7 on idle, now from what i can remember before i changed it, when it was on idle with the stock B.O.V, it sat right on the -7 at idle, why would this change???? any help on this matter, and what does it mean???