I had the same problem once while on a track day. But mine was due to a small era on my part.
While on track i got a fault on the rev counter to indicate EXUP problem. So i stripped, cleaned and re fitted, then went back on track. Only to find that it would only rev to about 6k (i think). I returned back to the pits and found that i had put the cables on the wrong way round. ( Schoolboy era.).
Have you/anyone done any work recently.
Ps. When it was out of gear and on the stand it would rev freely.
While on track i got a fault on the rev counter to indicate EXUP problem. So i stripped, cleaned and re fitted, then went back on track. Only to find that it would only rev to about 6k (i think). I returned back to the pits and found that i had put the cables on the wrong way round. ( Schoolboy era.).
Have you/anyone done any work recently.
Ps. When it was out of gear and on the stand it would rev freely.