Hey guys, I have a buddy with an 05 R6 about 30k miles on it asked me to come look at it today. All of the sudden it has a sluggish throttle response from idle, and once it warms up it gets worse. Even to the point that it backfires when you gun it from idle. It does this under load and in neutral. He has gone through a new tank of gas already and it still does it. I told him to change the fuel filter, the last one was put in 12k miles ago. But I honestly don't think that will fix it. Any clues anybody? Maybe a cam position sensor if that bike even has one? Thanks!