Remove the lower intercooler PVC housing, and spray some water jet in parallel through the dusty fins of the intercooler.
Yes, remarkably the turbo is situated quite close to catback exhaust. Since it's quite compact, simply spraying WD40 through your exhaust will get rid of some of the soot particles lodged in and around the Turbo bearing. Doing so would make your turbo whiz better and some good revs would burn off the excess WD40.
Cheers mate