4.0L Jeep XJ Cherokee Supercharger Kit - Hot Rod Hop-Ups
The fuel line from the stock in-tank fuel pump is routed to a high-pressure pump mounted on a new bracket on the side of the new intake manifold. Next to the pump is a rising-rate fuel-pressure regulator that actually increases fuel pressure in the fuel rail when the engine sees boost. Higher fuel pressure in the fuel rail means more fuel enters the cylinder for a given fuel-injection cycle.
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