I installed a boost gauge on my 96 6.5. I used the replacement bolt for the feed tube. When I removed the dust cover, to install the bolt, there was a vacuum can on the top of the intake. The 6.5's on Youtube didn't have this and the bolt, they showed replacing was on one corner of it. This makes me wonder what it is and is it safe to remove? I was under the understanding the the wastegate control was the only thing operated by vacuum. Can someone shed some light on this, for me?