There is a breather hose that runs from the rocker cover breather direct to the lower side of the box, I've just cleaned the breather and removed a small restriction on the bend as the pipe had started to kink, but still 50% open.

 

Since cleaning, been on a 25 mile each way trip, came back and left to idle for 20mins, absolutely nothing from the exhaust, i will continue to monitor it for now

 

hello

I've always had a bit of oil / sludgy black stuff in the cross over pipe on mine. I think as long as you're not belching out blue smoke on boost the seals in the turbo should be OK.

Could be breathing a bit heavy if you've got it plumbed in as per factory.

Blue smoke on start up is normally valve stem seals.

BTW. don't be too scared of having a go at the turbo yourself..the kits are pretty cheap on ebay and its only a few little snap ring on the shaft.

 

Thanks, since improving the breather it has been ok so far