well first off ill start off with saying that my car likes to burn off oil and smoke from time to time, lets just say that i just got my car back from the mechanic and what he had said about it was that there was too much oil in it and the motor was trying to force the oil out and its burning it off, not sure how that would happen with out something major being f**ked up. then another thing is that it has some sort of fuel issue as he put it. first off when my car has warmed up, my car really doesnt wanna stay running if my stopped and in drive, to help it out ill put it in neutral and even then i still have to give it some gas to help out. also while it is runnin it sounds like one of the of the cylinders isn't firing rite or something cause while you listen to it starts off as a small lil pow or small boom. lastly tonite, i was stupid and decided to push it to far and raced a sn-95 mustang and well i was racing him and we stoped at a light and my car was dead by the time we got there and there was a **** load of smoke that followed, and well since then it runs really rough like its luggin or boggin down slightly or like some of the cylinders arent firing. also im now feeling the vibrations of the motor now more then ever. im really desperate to get my car up and running so any ideas or help would be greatly appreciated. thanks

Smoke from where? Makes a difference in determining what's wrong.

hows your pcv system

any compression tests done?

vaccum readings?

Burning oil can be piston rings or valve stem seals