ok i dont know what this is, but it is a guage and it might read fuel pressure or oil pressure but im not really sure what, where, and how much? lol
what it does and if i really need it?
in this pic right here:
That is the fuel pressure gauge that is mounted to a regulator on a regulated return fuel system. There are some advantages to this type of system Vs what our trucks come w/ from the factory. You probably won't have a problem maintaining fuel pressure if you have stock injectors on your truck, but it also gives the air that gets into the fuel system a place to go instead of being forced through the injectors.
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