You can crack stuff with a stock pump and a pressure box. Anyone seriously persuing perfomance on a
CR engine, SHOULD invest in a rail pressure gauge. Sustained high pressures approaching 20k, will make your injectors be short lived. This applies to any product that positively enfluences rail pressure, the potential to damage injectors is very apparent. The Arson kits only increase the potential for more pressure, it has to be asked for by the ECM, or a by a pressure box or in programming. Even upon command it will only deliver what is asked for.