When I turn my key on, I get a weird chirping noise almost like a cop siren chirp. Since this started, when I get on the gas, the machine runs hard to about 35 mph then bogs and stutters. Drops from 8200 to about 6500 rpm then takes off again to about 8900 then drops back to about 8400 and quits pulling as hard. This started after I drove it in a parade. Couple of miles slow so I was in low range. Can't hardly imagine that doing anything but... Also recently added 32" coyotes. Could a smoked belt cause this kind of weirdness?