bike problems

I have a 96 honda cbr600 f3.
I took the nitrous off the bike and for some reason the bike is spuddering and it feels like it wants to die. My question is on the gas tank their are 4 hoses that connect and two of the hoses aren't connected, is that normal or should all of them be connected?
If you have any input it would be greatly appriciated.

hoses from the fuel tank should be connected to vacume lines on the carb, the nitrous usually is an independant system that doesnt corellate with the fuel cell. By removing the nitrous system, do you mean removing it completely or just the bottle? also what type of nitrous system did you have?

The nitro was a wet set up from nitro xpress. I removed the whole set up,the bike sounds sick or something at idle and when you give it some throttle.