Maybe some knows this issue: when i drive there is not much of a problem untill i reacht the highway then after accelerating to like 140 Km/h the engine doenst want to go faster anymore ( it remains on the same speed ) then i wait for like 15 to 30 secs ( minimum throttle ) then it will accelerate again to like 160/180 Km/h and then it starts again !
thanks in advance, Marc