HOW MUCH OF AN INCREASE IN POWER WOULD I NOTICE BY JUST ADDING AN AIR FILTER. WILL IT GET RID OF THAT INITIAL DOGGY FEELING THAT I GET OR DO I HAVE TO DO THE CARB WORK (JETTING) TOO.....I FIND THAT WITH MY NEW 26" ITP 589'S THAT THE MACHINE IS DOGGY. I AM CONCERNED THAT WHEN IN THE THICK MUCK, I WON'T HAVE THE POWER TO TURN THEM.....