Decided to clean out my intake as well as the MAF so removed the intake and throttle and I noticed what appeared to be a vacuum life just hanging there which is coming from under the drivers side intake manifold. When sticking my hand around I found this T connector which had another Vacuum line coming off of it as well as a piece of tube which had been blanked off with a screw.
Any ideas what the heck this is for or where the other side of this Vacuum hose goes?