Yeah, I agree with Roald. You should def. get a pipe with that.
I would look into a 15mm Bing or 15phbg. It will retain your lowend, but give you a slightly higher topend that the 12 or 14 bing won't allow for.
Roald I don't know how fast you got the K-Star Cylinder you shipped me, but we got it up to 53mph, then it started eating pistons like nothing else. It hangs on my wall now. :DD
Sorry to thread jack.