Needing a car vacuum sensor

Looking for a vacuum sensor for a car to that I can read with the analog in. It has a gauge on the dash, but I want to be able to display it as a bar graph that I can see better when driving. Later I will tie this into some other ideas that I want to try.

You need a MAP sensor , which measures manifold absolute pressure.
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Thanks. Never thought of using one of them. Only dealt with one when it failed on a van.