OK, so an independent garage where i work did me a favor and took a look.
Its the exhaust... Miltec 3", where the cat is, its hitting down just behind where that bracked with those two red bits are. Can see the marks on the cat!!
I have contacted VWR, told them, im calling back next wednesday... and then booking it in... im guessing the shape of the bend isnt right...
![fighting :fighting:](https://www.mk5golfgti.co.uk/forum/Smileys/newsmileys/fighting.gif)
Although thats the noise, why its moving around makes me think its down to hop, causing it to travel up and down...