[xero]

So I have an 86 944 turbo, it has weltmiester chips and the boost goes up to about 14 or 15 psi (2bar) I have owned the car for a few years and within the last year the car has been idling rough seeming a bit slow to pickup speed off the line and when the boost kicks in at about 3500-4000rpm I can see quite a bit of brownish blackish smoke coming out of the tailpipe, the car also seems to be running low on oil all the time.
the Oxygen sensor has been replaced recently and I even swapped in a different AFM but no change, anyone have any suggestions??