Well what little I rode the Gt this morning the termi kit does give some more. I am at work now.........bike still in back of my truck 200 mile round trip. Second gear with out clutch put the tank in my face quicker than drilled pipes,drilled air box,and 02 manipulator. I left halls on the back wheel and wheelied all the way down there street.........Pretty cool sound and power. I made 81.96 HP and 62 something TQ with the drilled stuff. On dyno the termi kit might not show anymore but its there for sure. I will dyno maybe tomorrow and see. And also put some miles on the bike for more comparison. Ended up $1041 total including install.