pressure vs flow
Most older OEM fixed fuel pressure regulators were set at 3 bar (43.5 psi), therefore the injectors were rated at that pressure. If you change the fuel pressure to 58 psi (the OP's question) the injectors do flow more, search the web for the formula. For the Gen 7, simply plug the new injector flow rate into the config screen and all is good without a re-tune.
Peace,
Rob
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