Ok, Alex I'll keep a close eye on things.
It is fairly stiff stuff and only short lengths between supports. The only bit long enough to 'collapse' is the 90 deg bend. I don't think it would collapse unless the filter were to clog. But maybe I will put a support tube inside the bend to be sure.
Thanks for the heads up
The 90 deg bend is the hose that I was referring to mate
I only mention it as I had the "collapsing" issue with an ATI C2 supercharger kit that I once ran on a Zed.
The problem is that you may not know that it is actually "collapsing".
I spotted mine on a dyno run.
Alex