Originally Posted by Seeker

I'm sure Higgs would make you a chamber (for a price) and you'd get more power if jetted for it.



A power valve? Like Yamaha's YPVS? If you thought your exhaust was expensive a YPVS system would require a mortgage. A reed valve would be cheaper but still require ports to be modified. I would stay with stock and just enjoy it for what it is.