I had a similar designed induction kit on my 106 GTi. Sounded awesome, and made quite a bit of difference. It was made by eccosse but simota made a similar kit, though it wasn't as well made.
I'm actually quite interested in this, as it should sound pretty awesome lol. And should help prevent heat soak to some degree, although it looks like fibre glass??? so not sure how effective it'll be at it.