Ive been tryinbg to do this for a while too, my intake makes so much noise its pissing me off. I've looked at the th fix article but have some questions, when he says
For the SVT, or a car equipped with the SVT intake, the optimum hole size in the plug
seems to be 3/16" or 7/32".
is that the hole size for the rubber hose after inserting the copper pipe cap?
and whats a copper pipe cap just a cap with a certain hole size that restrics the air flow?