here comes the higher resolution version of the sound comparison video, I am showing the comparison between the stock and black widow exhaust on 2015 Yamaha fz6r. The sound on the black widow was a bit rough in the beginning, but since the ECM is adjusting the fire sequential and stuffs , it will sound better in the future for sure, this is my first bike, so I won't spend another $1000 on it just for the power commander, I will do some cheap mods on it to make it feels more sporty, see you guys soon!
