well i went down to portland or,this weekend and had my busa put on the dyno for some baselin test the dyno is dynojet 200 with the gas analyzer whater ever that really is they explained it to me but i still got lost. any ways back to the testing final basline was 152 hp this was stock with only 1100 miles on it we then put on the akra system and baselined it again 159.3, next step we used the yosh box and made several runs, fineey ended up with 162.4 hp with no air box mod and stock air filter in it on the dyno graph there appears to be no lose on the bottom end and mid and top end it is fantasic. no stutter throttle response is instance,and the stock system weights 31 lbs the new system is 10.5 so it is 20.5 lbs lighter what a bonus, it just flys. ii am also running a 16 tooth front sprocket and brock lowering kit,. drive safe and fast burt p