it goes into 3 and makes that sound like the belts are squliching but when having the throttle all the way open on 3rd gear i see it shifting into 4th automaticaly like real fast doesnt give 3 gear a chance to rev up. i think it is already in forth gear becuase i feel it like holding back till i reach 82 or 83 mph then i top out at 110mph on forth gear