I need to know the exact location the MAP sensor on a 2009 Dodge Ram 1500 Crew Cab 5.7

 

Welcome to DF! MAP sensor normally is installed on the intake manifold. You may need to remove the air cleaner, etc to get to it. Google for a picture of it so you know what your looking for. I'll move this to the 4th gen Ram section so they can get you a more precise answer.

 

passenger side back of engine on the intake manifold. Follow the transmission dipstick and as it curves down towards the edge of the engine, just above it to the right. You can see it with the engine cover on, but you may want to take it off.