[Bob Gullett]

After installing my Magnafuel system I was having a problem with the large port regulator as well. Out of the blue the pressure would spike pegging my guage and of course blowing the needle and seat off the q-jet. I contacted magnafuel and they suggested along with the rear fuel filter to add an inline filter just before the regulator. Since I have done that never an issue again. They claim that the regulators are very sensative and the smallest particle of anything can cause the regulator not to work properly.