I have absolutely no idea how long it hasnt worked for but my boost gauge isnt reading anything at all. I automatically checked everything and noticed I never put a bung in the pipe that goes from the throttle body to a check valve then joins to a metal hardline that runs along with the fuel rail so I plugged that still nothing at all it just sits at 0 the car dont feel underpowered in anyway so is it likely its just the gauge has packed up even if a pipe popped off there would still be some form of vacum wouldnt there ?