The 7.3 Powerstroke fuel system was designed to handle the factory
injection system. Even when you install a performance chip for a
mild upgrade the system starts having issues with supplying the
proper pressure for atomization. The fuel system is designed to
supply the injectors at 50-60 psi even a wide open throttle.
Adding moderate to extreme performance products could drop the
fuel pressure as low as 10 psi cause injector starvation which
leaves you with huge losses of power, fuel economy, or injector
failures. Add a new fuel pump, regulated return fuel bowl delete, or a complete fuel system and improve the performance of the 7.3 Powerstroke.
If you add performance modifications and the fuel system can't supply the pressure then your efforts to make more power won't deliver. Along with more fuel flow the fuel system is the delivery system and must be in top shape. Upgrade the supply system from the tank, add a larger fuel pump, or increase the flow to the injectors and you can be sure your ready to perform at peak levels.