At the heart of the 2003 - 2007 Dodge 5.9L Cummins is the Bosch CP3 Common Rail diesel fuel injection pump. The CP3 is available with stock OEM factory settings as well as modified for 33%, 85%, 120% and a massive 200% fuel flow increases for high performance Dodge 5.9L Cummins applications. If you want more horsepower out of your 2003-2007 Dodge 5.9L you need to supply more fuel. Injectors can only provide as much fuel as is supplied to them, no matter what nozzles you use. Our performance CP3 pumps are capable of increasing fuel flow by as much as 200% over stock settings and we have options for dual-pump systems. This will make your high performance injectors perform even better! We strongly suggest our 30,000 psi dual feed line when you install a high performance CP3.