i have an 05 660 grizzly completely stock and every once in a while it will backfire especially if it has been running fast and you let off the throttle doesnt do it all the time i was wondering if i could do anything about it thanks travis

 

what's your elevation and temperature? do the grizzly's have a dual carb set up like the raptors do? if so i can help you out alot. iv messed with the jetting for hours and hours on my raptor.

 

its called the "grizzly fart",your not alone and mine did it once in a while since new,mine is also a 05

 

should add,were not alone because enough folks have it also to have dubbed it the grizzly fart