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carbed engines use low pressure pumps in the 3-8 psi range and upgrading from stock psi will require a add-on fuel pressure regulator
fuel injection use high pressure pumps in the 30-80 psi range and all are controlled by the fuel pressure regulator
high volume pumps might last longer as they don't have to work as hard
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1989 300ce smoke silver / brazil, in a constant state of flux ~~~
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