So I received a shitty injector. All you have to do, and I would recommend doing this regardless of whether or not you think your injector is clogged, is soak it in a small bowl of gasoline overnight. Boom, worked right away. These injectors have such fine pathways that grease and shit from manufacturing can foul them up. i agree with Mike155cc though (if you can believe that) it should come ready to go, not clogged or shitty.
I have a Yoshi pipe and I love it, opened up everything and sounds BAD ASS! lol. I like it, sounds like a dirt bike now.
For what you want, it sounds like 155 is what you need. I would go exhaust too. Mike155cc is full of shit