[Barbapapa]

I'm not sure that's intermitent fueling in the video. I think it's the light from the flashlight moving along with other conditions, the camera, airflow, vibrations etc. I've looked at that and another video in their higher resolution form and have a hard time telling what's really going on.

The non-oem parts I avoid are fuel pumps and ignition parts. It's because oem stuff has to be proven to be reliable. I use a Walbro pump which is oem on some GMs. I avoid fuel/ignition stuff like BG, MSD etc because I consider it unreliable.