Guys w/aftermarket valve covers in here

Sevan

Founding Member
Dec 4, 2001
558
0
16
IL
Last night I changed my stock vavle covers to Chrome Roush ones, what a difference. Everything went on smooth with no problems, but the hose that connects from the fill tube of the stock cover where you fill in the oil there is a hose that runs from fill tube to the throttle body. I had to eliminate that for now. The reason for it the Roush covers has a hole on each side, I pluged one side of the covers, can I use an air breather on the other side?
Does anyone know the purpose of the tube? I have a pic of the tube I'm talking about. This motor pic is not my car, but it shows what I'm talkin about really good. All suggestions are welcome.

Thanks