Instead of using a 110-volt Injector Driver Module, Ford switched to a Fuel Injection Control Module that uses 48 volts to operate the injectors. Once the injector sees the 48 volts, it activates a spool valve. The spool valve is a gate that allows the oil in or out. As it moves from one side to the other the oil enters the injector oil cavity. The intensifier piston still pressurizes the fuel at a 7 to 1 ratio. The fuel now needs to be above 3,100 PSI before it can overcome the pintle and fire. In addition to this change, the oil pressures now reach up to 4,000 PSI.
Over the next 4 years, Ford made many revisions, the biggest being between 2004 and 2005. The High Pressure Oil Pump (HPOP) was revised, intake elbows were different and turbochargers, along with programming were revised, as well.
Again, with the emission laws changing, Ford was forced to redesign the engine in 2008. The new and current version is a 6.4L engine featuring common rail fuel injection.
Since the 6.4L engine has only recently been introduced and not much is known about how to make big power, we decided to focus on the 6.0L Powerstrokes. We scoured the land for the best known, biggest names in 6.0L power and here are the recipes we came up with.