Jesus, you can tell it's been fitted by someone without a clue, because of how the vacuum feed is taken from the little metal pipe where the standard one comes from.
If whoever fitted it cared to trace said pipe back they'd find it just goes to under the inlet manifold, turn the DV through 180 degrees so it's pointing towards the centre of the car, and that 4'' of vacuum line could become 12''!
Still, if the car has been decatted there's no reason it won't run OK, it'll overfuel on gear changes and pop and bang, but it won't do any harm.
Still gay though, get a forge oo7P back in there.
Tim: the cold side mod can be worthwhile, as it's circulating cold air back into the system, rather than hot air from pre intercooler, this not only helps keep charge temps down, but it also stops the DV from getting super hot and sticking