Moved to correct section

 

Your code.
P129D would be IMO the charge air temperature/pressure sensor sounds faulty or inlet pressure sensor on intake manifold. Just my opinion from your descriptions.
P013a-o2 Sensor 1/2 Slow Response - Rich To Lean so an o2 sensor is bad or going bad again IMO.
Could be injectors being stuck open causing it to run rich.

The white smoke still would indicate coolant issues. You really need to monitor your coolant and maybe get a pressure test done.
Look in the coolant overflow and see if there is oil residue in it. Also look on the oil dipstick and see if you have coolant residue there.
You might have a small crack in the head or the head gasket is going.

Put some newspaper or cardboard under the car overnight and see if anything is there in the morning.

 

Sounds like you have a gen2 car since you said turbo-seal....Click the notify box, and ask the mod to move the thread....that way GEN2 folks, the turbo folks can see it and help!

 

Moved. Thanks guys.