It will depend on: the size of your injectors what your base PSI is set at Volts to the pump What dyno your onWith ID 1,000's base PSI of 45 12 volts on a dyno dynamics Two 485's (-8an) You can hit 650 ish 28-30ish PSI The problem with 485 pumps is that they fall on their face at higher RPM's / Pressure

Madhatter10-6
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