i have a 96 1100 zxi. just this last friday it was running great with zero troubles. today it started good but about 5 minutes in to my run the engine was not producing nearly as much power as it did last week. there is nothing that i can feel in the intake great but suddenly my ski wont get up past 6k on the tach. it is idling rougher and there is a almost sneezing sound from inside the engine compartment every once in a while at low speed. any ideas would be most appreciated.

 

It might be worth trying new spark plugs. Sounds like it's misfiring.