Idle problems

Hello guys now I found the error because my idle was at 1200 u/min it was the rev indicator now I have a new I had a mag in my small inside the cables all re-set and also checked on through but the little one now when I switch to a gear in the idle a pulsation but if you gybe gas is everything again in order where lies the error or have I built nonsens. Oh yes power is full there Was yesterday from Muc make Passau traveling 260 km/h without probs