I have the Factory kit in my Bird "150" jets in place and she runs like a raped ape! I read all about the Dyno kit and was turned off as soon as i came to the part about"Drilling"? What? Yeah right, I want to drill my $500 Carbs, NOT!
Mine was Dynoed and she not great on gas but you have to give up one or the other! Gas or Power! So with 148hp at the rear wheel now I am happy with the out come, and BTW I have the Akrapovic Full system also! Boy does she sound great!