Being a former high-performance engine development engineer at Cummins has given Luke Langellier insight on why some OEs went to the Bosch CP4 high pressure fuel pump and why others did not. Join Luke in the S&S Diesel Motorsport fuel lab as he explains the shortcomings of the CP4 high pressure fuel pump and why it is prone to failure, and why the CP3 is a rock solid pump for retrofitting. #SSfueled | S&S Diesel Motorsport
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This is what a CP4 failure looks like. Metal contamination doesn’t stay in the pump. It moves through the fuel system and takes injectors with it. That’s why these failures get expensive fast. This is also why many owners choose a CP3 conversion instead. #teamfirepunk #firepunk #cp3 | Firepunk Diesel
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