as Poverty mention'd the forge spacer will not do any harm to the car whatsoever its just a spacer with holes init to create the woosh noise.
It took me 2-3 hours to fix this thing on my car...didn't have the correct tools to reach the torqux bits
and the car wasn't high enough either.
its way easier on the cupras and tsi engines as its located on top and not bottom grr.