Originally posted by ride_out
Looking at that pic makes me ask a "ricer" question.
If the needle is at 0 and there are numbers on both sides. is thre negitive boost?
when you drive around before boost you will be below zero. on the an apexi vafc we have a pressure monitor which is somewhat similar to a boost guage i think. the more i give it gas the closer to zero it comes. after zero there is positive manifold pressure or boost. a few times i have hit zero and have hit +.1 before.