So took the car out today after work went to the gas station and filled her up with petrol. On the way back home took the long way where there is a long straight away it shifted into high gear so I put the pedal down and it about left the tires on the ground it jumped so hard. It almost felt like the transmission down shifted rpms jump and seem like it shifted up again. Thought maybe throttle was hitting on the air cleaner recently changed my setup but checked it when I got home and it wasn't hitting. So this happened several times before I got home don't know what the hell it could be any suggestions.