pulse holes. Walbro 603

What are pulse holes for? I plugged mine all the way cuz i dont have an adapter plate is that bad?

The pulse holes is what make the little fuel pump work. If you plugged the the pulse hole in the stock manifold drill it back out and you may need to open up the oblong shaped part of it to. You should of just filled in the bottom half of that oblong section of the pulse hole.

i tried that but i got ait leaks. ill try it again tho