[John W]

Hello all,

just back from a cracking good time in frog-land on the ST4S.
Bike performed faultlessly with the exception of the above.

3rd day of the trip the bike suddenly dropped its limiter down to around 9k rpm. It remained like this for a couple of days, and then suddenly adopted it correct setting. Nothing else changed. I was using al different brands of petrol, so it wasn't a preticular brand. Oil etc were all as per normal.

One of the other ducati ST owners on the trip suggested it could be a faulty engine speed sensor.
What actually controls the limit - the ECU ?
(The bike has the DP performance ECU fitted).

Cheers all,
John.