well i just droped it at the dealer and what it is doing now is running like a bag and staling without throttle *but runs fine in high rpm* and it keeps coating the plug with black stuff like a soot. I put a new plug in fired it up and ran like bag instantly and coated the plug in black crap...smells like its running really rich. Anyone have an idea of what it could be?

 

Is your air filter plugged with junk? Does it run any better with the airbox lid off? And...do you have a "check engine" light on? Hopefully, it's still under warranty.

 

If the gas mixture is off i would have to say either the o2 sensor is bad or one of the sensors are sending false readings or the filter is dirty give it a closer look...also what kinda gas are you using and do you have enough gas in the quad

 

Picked her back up today and it was the TPS (throttle positioning sensor)

So if anyone has this issue its posted now lol

It was all under warranty[img]i/expressions/face-icon-small-smile.gif[/img]