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VP44 and large injector question

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I understand our VP44's produce around 17k PSI at the injector. What happens when injectors such as DD super mentals are installed? I now there is a pop of pressure but, does the fuel " fizzle " out or do you loose atomization in the middle of the process? At what degree do we loose optimum injection pressure. Can the VP44 handle the load reliably if it has at least 6 or 7 PSI on feed side?
 
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