Duramax Diesel Dual Cp3 Fuel Injection Pumps Feed the demand of your injectors by being able to supply more fuel The CP3 Injection pump is found on Cummins and Duramax Common Rail diesels, and is the fuel pump that pressurizes the fuel, over 25,000 PSI. Under the high demand of fuel in some high horsepower tunes, stock pump simply cannot keep up with the commanded volume or pressure. When this happens, you get a condition refered to as "draining the rail". What this means is that your injectors have let out more fuel that the CP3 pump can produce at a given time. Here are some of the most popular Cp3 Fuel Pump Companies that offer these products. ATS Diesel Duramax Twin Kit ATS Duramax Twin Cp3 Fuel Injection Kit ATS Twin Fueler System for the 2004.5-2010 Duramax doubles the fueling capability when running large tunes and bigger injectors. The system is not only designed to work in conjunction with the factory CP3, but it also maximizes the syste
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