Ported intake gain?

If you can’t find the other stuff let me know. The grinders run at 23000rpm and up so you gotta slow them down to control them. I love my set up but for the average guy costs to much if you aren’t going to use them often. I also look for deals on used stuff

a few pictures of my set upView attachment 1715840826View attachment 1715840827View attachment 1715840828View attachment 1715840829View attachment 1715840830View attachment 1715840831

I really like that swivel stand you have.