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Q:i am going from tbi to carb.i want to keep factory electric fuel pump(22psi) will this regulator be able to handle it to lower pressure to about 8 psi?
A:Hi Alex, good question! this part is able to handle low pressure to about only 4 psi. Product features. Low Pressure - 1-4 PSI, High Pressure - 4.5-9 PSI. To locate the exact fuel pressure regulator, please provide us the year, make, model and engine size of your vehicle.
Q:Holley website list 12-804 as having a range of 1-4 psi. You previous answer to the other quest was that this regulates from 4-9 PSI. What are the actual specifications?
A:Sorry for the confusion caused. The Holley Fuel Pressure Regulator (Part No. 12-804) is a Low Pressure (1-4 PSI) regulator. We will have the previous answer corrected. For any further assistance please feel free to call us at: 1-877-238-2623 or visit the nearest Advance Auto store and one of our representatives will gladly assist you with any questions or concerns you may have.
Q:does this have adjustable pressure or is it preset
A:This Holley Fuel Pressure Regulator (Part# 12-804) is used to adjust for fuel pressure requirements of various carburetors. This regulator adjusts from 4.5 to 9 psi. For further assistance, please feel free to call us at 1-877-238-2623 or visit your nearest Advance Auto Parts store and one of our representatives would be more than happy to assist you.