So, I have a 91 mustang gt, and I checked out my throttle body today only to find that it was absolutely filthy, I cleaned it and noticed a significant amount of the stuff in there seemed to come out of the tube that leads from the throttle body to the oil filler neck, so, if I'm not worried about emissions, can i just cap off the throttle body side and put a breather filter on the oil filler neck side? Or should I just keep the line there? Thanks