when you put a bigger turbo on a 940 do you have to upgrade the breather system? i got my 940 back on the road a few days ago but its smoking badly on overrun its a b230fk with a 16/19t im just trying to diagnose the issue atm but i no good with this kinda thing, its spitting oil through the maf sensor, seems like it could be any number of issues, any help appreciated

cheers