Might explain some of the problems I've been having.  I have cut the split off and put it back together and it seems to drive smoother.

Sure that runs to your boost pressure solenoid so you'll have felt a loss of performance, just slight though. 

 

Part number should be printed in white writing somewhere on the pipe. 

Yes, limp mode and EML, thought it was the tuning box. 

 

There is no writing on it at all hence the question!!

Looks like part of item 29 here: https://skoda.7zap.com/en/cz/octavia/oct/2014-753/1/131-131050/#29

Can't see a separate part number for just that last little elbow of hose though.  I would stick with your current fix, as the whole part with all the other gubbins ain't cheap.

Yes, that's it.  Was hoping the pipe might be available separately as it's just a push fitting but I think you're right in just sticking with the current fix!

Heat shrink tubing as a more permanent fix?