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I understand people want the NOX system if the car is being restored to stock but do most who restore to all stock actually want it to work ? Myself I would gut the solenoid so I have vacum advance all the time as I am sure it hurt milage also. With the solenoid gutted you could still have it all hooked up and looking correct. And this was before EGR was installed as I believe we did not see the first type of EGR system until 72 or 73. Ron







A well placed BB inside each vacuum hose will effectively bypass it.