Hey guys, about a month or so ago I drove about 2 weeks with a major leak in my IC piping. I was easy on the car but I think I may have screwed up/overspun my turbo. Now, my boost controller is hardly raising my boost levels and I have smoke from the exhaust. It's not huge but enough its noticeable. It only happens every now and then (I haven't seen a pattern yet), primarily at idle, and low level acceleration (IE. taking off from stop light). Is there a way I can verify its the turbo? I assume oil consumption but I haven't noticed a huge difference there.
Also, is that screwing up my WB/O2 sensors? Would an oil restrictor inline help? Lastly, who is a reputable turbo rebuilder. Its the Stattama T67 turbo.
TIA,
Slim