So get this.... the popping over the radio disappears COMPLETELY when the #5 COP plug is pulled off the COP. Edit: The yellow ACCEL COP was on #5. When i removed it and put it on cylinder 1 the noise went away. It seems that the Accel yellow cop is noisy. Unplugging the capacitor next to #5 with the yellow Accell on it caused the popping to get louder, plugging it back in made it quieter but was still there. Disconnecting COP #5 pigtail made it disappear altogether. Unplugging and swapping the capacitors did not have any effect on the engine misfire.