I just got myself a 2008 WR450F and i've been reading about all these compliance restrictors that have been put in place on them, such as a plug in the exhaust and throttle restrictions, and a mysterious "grey wire" that can be taken out of the cdi loom which changes the ignition map from WR to YZ. Now I know for certain that the air box snorkel has been removed and the exhaust plug has been taken out but i'm not sure what to look for with the carb. anyone offer any assistance along these lines?? I've actually got a yoshimura pipe coming in a couple of days, am I going to need to re-jet after fitting? Its a nice bike bike just seems to be lacking a little bit of low down power.