My car suddenly started to missfire so i treated it to a full sefvice i.e plugs,leads,oil,oil filter and it didnt help so i then cleaned the ISV,MAF and throttle body and still didnt help.I then noticed my coilpack had a broken plug connector and have now replaced this with a perfect working one and its still not running right.When it waseant running right i took leads off to see what cylinder it was down on and hoped that it was the coilpack but unfortunatly it waseant so basically im wondering what it could be.I was told by a reputable VW tuner that it prob would be the MAf but i am starting