I have a 98 Audi A4, just had one of the injectors & injector modules replaced yesterday. Been driving my car today & now there is massive white smoke coming from my exhaust, this has never happened before. Oil change was just done, no trouble lights are on, car is actually driving fine and the coolant level is good. Just spend almost $900 getting fixed & now this.. Please help!

Just drove it down to the store.. Smoked really bad for less than a minute then stopped. After I left the store (about 15 min. later) got in, left & no smoke.