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Products » Fuel Hardware » Fuel Pressure Regulators Find   Product: Fuel Pressure Regulator Rising Rate Adjustable Code: 310-060-301 Price: $229.00 Description: You can increase or decrease the pressure of your EFI system to suit the demands of your engine.  This regulator is rising rate.  That means it increases fuel pressure at a rate higher than the increase in manifold pressure.  If the injectors on your project turbo engine seam to just be running out when you get to higher boost levels, this regulator may be the answer to your problem.  Since it is adjustable, you don't need to run high pressure at idle just so you can reach the pressure you need at high boost.