so i hooked up my boost gauge yesterday and taped it into a line next to the throttlebody on the manifold, when the car is at idle it reads -15psi vac, witch makes me think that its working correctly, however when i rev it up is doesnt move into boost just goes to about -1 or 0 i can hear the turbo spool and i get surge when i back off so i know its atleast making boost somewhere is there a better place to plumb the gauge iinto or what would cause a 0 boost reading? Vacume lines missing maybe? also how long cani have the line from the turbo to the Tap to the wastegate? like is 30cm too far? thanks