| They each feature a range of adjustability from 35 to 65 PSI and can accommodate engine modifications from the mild to the wild side. They're made to bolt in the stock regulator's location so installation problems are greatly simplified. Utilizing a special wave spring to maintain constant fuel pressure, these Holley-designed regulators will truly enhance the performance of other horsepower-creating components that you may have added to the fuel system, air flow system and electronic system of your vehicle.
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