I need help knowing if this is a boost leake, if this is normal, or if the guage is going out on me. When it started gettin cold outside, the boost guage started to only read 10-12 psi. Then it got even colder out, in the teens, and the guage reads 5-7 psi. THen it will blow off in like the 9 vaccum range. I never noticed it doing that before. It seems like the 9 vaccum should actually be the 0. I took it into the dealership and they ran a diagnostics test i guess and they said it was all normal. They tried tellin me w/ the colder air the turbo is only able to push out the psi that it is reading, and once it gets warmer out again, that it should go back to being normal 14psi numbers.. What do you all think about this? Thanks for help