Hello, have just the following problem: until a short time ago I reached my 240km/h (have 180hp frontler) and was in 5th gear never in the speed limiter ! now it is so that I can drive a maximum of 225 maximum 230.. the last km/h also lasts something and at about 225-230 is then also sense, then it jerks like just the speed limiter. more is not possible ! otherwise however I have no problems, the correct (NGK) ignition plugs, S+ and… I already watch out. what is the for a shit ? as I said, otherwise he pulls neatly. (I test this about monthly, not that I always drive full throttle)