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If you did an opti, then this is a piece of cake. 4 bolts hold the fuel rail on, and after they are removed along with the fuel lines/injector connectors/regulator vac. line, you just pull the rail off (pull straight up on the fuel rail, the injector o-rings will make the rail seem still attached, but with some wiggling, they will come out). After that, use the torx bit (i cant remember the size) to remove the fuel line retainer, then the regulator itself from the fuel rail. All thats left now is to remove the regulator from the output line stubs with a couple of wrenches, then put the new regulator on, reassemble the rail and put it back on!!
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