I just bought my new 2006 XR650L. Pretty easy to justify these days with gas prices the way they are. Anyway, I have been reading the forum and I assume the uncorked means Airbox snorkel removed, carb re-jetted and emissions unit removed. Please advise is this a correct assumption? What kind of increase can I expect? I would like to upgrade the exhaust. Any suggestions on what provides the lowest noise level to increase in power ratio? When I leave Early from work I don't need the whole building knowing when I leave early to go ride.