Us: Don't beat on your car, this is just a base map so you can break it in without boosting...
Them: OK
Car drives away, and you hear boosting like a mofo...
Comes back smoking like a chimney.
Us: wtf?
Them: The boost gauge only said 1 psi...
Us: Turn the car off...
Them: ok
Us: you see how the gauge is not on 0 its on 10 vacuum side?
Them: ya.
Us: well, that meens your gauge isnt working right, it should be at zero,and that you boosted somewhere around 11psi on it..
Them: oh....