The cold air should be coming out at the bottom lol. 
Unfortunately that would mean longer pipe routing as you'd have to cross the pipes over top to bottom. Tbh it makes bugger all difference as the air will go wherever the turbo is pushing it to, you're better off using the shortest piping possible.
Bumper off is four bolts (assuming you don't have any lower tabs left). Loosen the cammed plastic guides just inside the front of the arches. Then up behind the chassis end plate on each side are 3 nuts, the two diagonally opposed nuts are the ones you want, 10mm iirc. Removing the arch liners is essential, washer bottle helps too, but you'll still need a deep socket and a variety of extensions to do them quickly and easily. Oh, don't forget to uplug the fogs lol.
Unfortunately that would mean longer pipe routing as you'd have to cross the pipes over top to bottom. Tbh it makes bugger all difference as the air will go wherever the turbo is pushing it to, you're better off using the shortest piping possible.Bumper off is four bolts (assuming you don't have any lower tabs left). Loosen the cammed plastic guides just inside the front of the arches. Then up behind the chassis end plate on each side are 3 nuts, the two diagonally opposed nuts are the ones you want, 10mm iirc. Removing the arch liners is essential, washer bottle helps too, but you'll still need a deep socket and a variety of extensions to do them quickly and easily. Oh, don't forget to uplug the fogs lol.