Dunc, is it easier to see an air pocket when at 45 degrees than upright? The bubble collects nicely right in the corner that is most visible when at 45deg (if you know what I mean).

Yeah, they're the PST ones - I asked him to get hold of one for me for my Tommy Hawk to avoid the 200 potentially collapsing a non rigid UAT.

Again, this is a 160 install and I've had no issues in any of my installs in the past with this size turbine. I will err on the side of caution with the 200SX Tommy Hawk and go 3/16" bore tygon throughout and rigid UAT.

M