ell i got my new tsais pipe and got it mounted. I wanted to hear what it sounded like so i put a splash of gas in the tank and ran it... thats where the problems started...when i emptied the tank and went to empty the motor of feul, it revved WAYYY up and didnt shut off till i put my finger over the pipe end. i didnt let it rev up too long...but i was wondering if it was just because it was super lean from being emptied or what?