Well, Im swapping out quite a bit of hose and tubing in my engine bay for silicone tubing. Additionally, I'd like to go ahead and order enough of each of the right size tubing to do my own DV relocation with the new hose and tubing I get. Anyone know the inside diameters for those hoses by chance? I assume the hose going to the top of the DV is either 3.5 - 4.0mm hose. I'm not quite sure of the one at the base. looks like 3/4" or 19mm hose. Can anyone confirm or deny either of these?

 

The dv is a 25mm or 1" od, you would need a 25mm or 1"id hose.

4mm sounds about right for the vacuum lines.