Re: Crossfire Service Manual Download
Without getting to technical, MAP stands for "manifold absolute pressure". These sensors compare vacuum reading inside the intake manifold to the outside atmospheric pressure, 14.7 psi at sea level. Many manufactures call them by other names but MOST cars have them and if you ever remove them or disconnect the vacuum source not only will you set a code and a check engine light your "performance" and idle will suffer. If you have a turbo or supercharger they typically are used to sense "boost" pressure, but some OEM's use two, one for vacuum and one for boost pressure, again, sometimes they use different names.
Greg