Many of the pintle style injectors can blog withstand higher pressure. Most injectors can withstand up to 70 psi. Also, at the higher pressures the injector fuel flow may become non-linear blog and cause inconsistent fuel delivery, usually creating a lean condition. In some cases the fuel injector will not open if the fuel pressure exceeds the design limit of the injector.
It is a good idea to know the maximum operating pressure of the fuel injectors. As you can see, the fuel pump described above has enough capacity to feed the engine with a little blog room to spare. If we take the flow of the injector (60 lbs/hr) and multiply it by the number of cylinders (6), we arrive at a total of 360 lbs/hr of flow. 15=60lbs/hr/ blog injector.