I have a 2000 ss A4, a bout six months ago my car would blow out a puff of smoke at WOT, since all this started, I have added headers and off road Y pipe, the car is much worse now, it even smokes a little at idel, and it blows out white smoke the whole time i have it on the floor, i have now power loss, and im not burning oil, what could this be. any info or opinions would be a great help.
thanks, Mac