Specific Fuel Pressure Regulator Subaru Impreza WRX / STI - Bonalume RPBWS

To shorten and simplify the text, for convenience we will later call the Fuel Pressure Regulator with the acronym rpb. Your engine runs lean, that is, low on fuel, either for an unspecified reason or because it was born that way from the factory. In this case, if we apply the rpb and increase the fuel pressure even slightly, we will immediately have increases in power that can be felt even by the less experienced. But if our engine runs very well with carburetion and we install the RPB, we will not have any improvement, or if the engine runs slightly fat and we install the RPB, we will have lost both power and torque. MAX CAPACITIES: 3 bar = 270 lh - 4 bar = 220 lh - 5 bar = 190 lh

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