Hi All, With a Pertronix Ignitor installed the dwell should be a steady 23 - 25 degrees. While this seems low, it is normal and correct. Even with a generator and OEM voltage regulator the primary and secondary scope patterns should be surprisingly good! FYI, I had a lot of ignition noise on my AM/FM stereo original radio conversion with the points distributor. I couldn't surpress it. It all but disappeared with the Pertronix. Greg Leggatt.