12-01-2016, 09:19 AM
I recall from 2013 a heated debate about whether the CB1100 had a knock sensor. This had to do with acceptable fuels, and whether any power benefit could be had with higher octane.
Obviously, a knock sensor allows an engine to be run safely on regular but benefit from high-octane fuels by advancing ignition timing for a power increase.
I don't know for sure about this, I think the owner's manual did not mention a knock sensor (it would need four), but I just received a Hexcode GS-911 ECU interface for my F800GS, and it has a wealth of information about the Rotax engine and the bike's systems.
Never thought about it as I always run the recommended 91 octane, but the GS's engine has twin knock sensors, meaning it can be run on lower octane fuels safely (to a point).
They show up in the status display during self-check along with tons of other stuff. Good tool to have for bikes using extensive computer control.
One can also clear faults and reset service reminders. I have no intention of taking mine to a dealer so this tool was essential. It's especially needed to check and cycle the ABS unit.
Obviously, a knock sensor allows an engine to be run safely on regular but benefit from high-octane fuels by advancing ignition timing for a power increase.
I don't know for sure about this, I think the owner's manual did not mention a knock sensor (it would need four), but I just received a Hexcode GS-911 ECU interface for my F800GS, and it has a wealth of information about the Rotax engine and the bike's systems.
Never thought about it as I always run the recommended 91 octane, but the GS's engine has twin knock sensors, meaning it can be run on lower octane fuels safely (to a point).
They show up in the status display during self-check along with tons of other stuff. Good tool to have for bikes using extensive computer control.
One can also clear faults and reset service reminders. I have no intention of taking mine to a dealer so this tool was essential. It's especially needed to check and cycle the ABS unit.