Sr help

[Lappede36]

So i got this sr swapped 240 about three weeks ago (traded my e36 track car). it needed alot of work compared to the car i traded the kid. i knew i was getting in to something i may not have wanted to, but thats besides the point i drove it back from where i got it 8 hours no problem at all ran fine. (since sr are know for unreliability) i get home look the car over and nothing is wrong the first weekend came up i put a megan exhaust manifold on it still ran perfect besides the 02 sensor being destroyed i found out. so the car ran some what rich. so i decided to turn the boost up a little (Disco potato) to under around 11 -12 psi. to try and lean it out. ran that a little while till i got a 02 sensor and a safc ( i know they are horribly) but right now im kinda broke dude to all the crap i have been replacing. and then last week i was cleaning up the engine bay and took the catch can off i may have put it on back wards who knows but it started smoking horribly ran fine no problems boosting or anything besides the smoking not always but sometimes on decel and on hills. so the last two days ive taken the ic piping and ic off and cleaned it as well as the turbo. im still a little confused on what it might be from the turbos blown or valve not seeding or maybe even the rings are dead from it running rich. i wanted to get some thoughts from you guys on here.
thanks