Just recently replaced my injectors and plugs on my S2 turbs and im still having problems when i start it up. It miss fires for about 10 - 15 seconds then it clears which is really anoying . Im assuming its over fueling when the engine is cold so what could be causing this. Im thinking about changing my fuel metering unit as i have a spare and then have it tuned up. The other problem with this is that the revs keep on droping due to this problem. What should i do? Any advice on this would be appreciated