info for you guys out there,had a problem with my bike backfiring and popping a bit under deceleration and off the throttle,turned out to be an exhaust leak at the head caused by a loose nut on the manifold bolt.Was such a minor leak you couldnt hear it.....till the nut fell off.No damage,runs fine with your nuts in place.Buddy just bought a CAN-AM 800,amazing power,blows my nuts off