roe boost gauge needle
recently my boost gauge started to have some irregular ticking and not hold steady both at idle and in boost but would eventually level out and hold. I initially thought it may be a vacuum leak but that wouldn't answer the readings being solid sometimes and having a small tick sometimes. When the gauge is ticking I also notice with a small rev it seems bogged down but after 1-3 revs it goes away back to normal. I plan on looking around the engine this weekend but would like some suggestions on where to start outside of vacuum lines.
blue blue blue bue white