Crown7

So I have a Q300 axleback with they quad tip and it is too loud and drones a decent amount when going up hills under load (and unfortunately I live in a VERY hilly part of washington). This exhaust would be ok if I lived in a very flat area like... kentucky? Anyway I was thinking of blocking off one tip on each side (since its a true dual exhaust) to cut down on sound. Do you think there will be any issues with doing a blockoff on each pipe that could possibly harm my engine or exhaust system? I honestly could care less about the reduction in performance because if I want to go fast, I ride my sportbike.