hi peeps
I had the same problem, I bought the stainless one of flea buy, paid and it finally came. Im not an expert on engines as im an in the IT industry, how ever after noticing the black one on ebay with two little bits on the the side I emailed the seller and asked if I put the vac hose on the one and only tube on my stainless one. He replied a simple yes, and said yes 4 more times after me emailing and explaining 4 differnet ways. Even tho it said in instructions that came with the mod to put a screw in the vac tube and hide it away. Which as it is a car part I didnt think was a very good or professional way of doing it. I also asked if I follow the instructions should the little tube not be capped off? Anyway by this time I was well confused so i sent it back and asked for a refund, to cut a even longer story short he did not refind me or pick the item up from his sorting office. Which suited me down to the ground as he would not even email me back regarding my refund. So back to today, after returning it at the start of January it has finally made its way back to me after ending up in belfast at the lost items section of the post office.
So.........im getting the till tube welded close. Problem solved. Oh and dont buy the stainless ones lol. complete pain in the ass.