[Masteryota]

Ahh, fuel injection, my specialty. I know those big quads are liquid cooled, and this symptom sounds like a coolant temp sensor has shorted. The ecm will richen the fuel mix on cold starts, and if the sensor is reading that the engine is warm, then it will run crappy cold, and then once the engine warms, it runs like it should. Without knowing the particulars, anything more would be a guess.

BTW, very nice machine, always wondered what power steering on a quad would be like.