hi everyone.. im new to this forum.. i have an audi a4 advant 2.0t quarttro 2006 s line which i had just under 2 years. when i bought the car i noticed that my engine was making a noise and getting smoke from the exshuse when throttling and burning oil . i took it to a garage which a guy said that the noise was coming from the back of the engine. right this is what i had done with the car.

cam belt/water pump
timing chain
2 x P.A.S HOSE
crankcase breather
camshaft pully
turbo charger

Plus servicing etc. @ MILEAGE 94,284

this was done back in march 2016. I remember after getting the car back asking the guy why is the car still making noise. it was'nt purring like it should be. you see the noise was a bit better than before and its my fault for not challenging him. he had shown me that the timing chain tensioner had broken etc.
The car till this day sounds like a diesel very noisey. still smokes when throttle.

what could be wrong with the car. what should i do