I just put an ignition, cpi inframe pipes, and new smaller tires on the bike. After all that i am now slower then before the mods. I never had the bike on a dyno but im estimating it pushes 80 hp. My engine builder put 19 inch tires in the back. I wanted 20's but ow well. I took it out and and the bike runs great. The throtle responce is perfect, but i go through the gears faster than i can shift. I finally get it to really pull in 4th gear. What sprocket sizes do you recommend? I have stock in the back 15 in the front. Should i put a 16 or 17? Any ideas?