Hello S-Audi fans, I have 99' facelift S4 BiT @ Oettinger 232kW, 6speed manual. And it has a start up problem. Problem appeared about one month ago and very suddenly- at one morning when I started up the engine (it was maybe +5degrees
Celsius outside), the car had rough? idle. Like one cyl. is not working. And it was smoking. 10-40 seconds- and the idle is OK, and no smoke. It...