Thanks William1 for the help on pulling the blue/white wire. I will do it this weekend (riding all day tomorrow) and post the results...better e-start ot not.
I guess my inquiry with regard to the grey wire was unclear. I am very aware (thanks to Thumper Talk) about what the grey wire does...my question is specific to the fact that my bike was made in 04 for export to Canada as opposed to the US.
I have been told by a WR owner up here that an 04 WR450 made for the Canadian market in that year did NOT come with a ignition map
that was set up for it to meet US emissions standards, and therefore they grey wire mod is irrelevant for this specific machine.
As I mentioned earlier....having had many years of riding, including stints on my friends KTM 400, Husky 450 and a DRZ400 (all three of which were "uncorked" accordingly)...its hard for me to fathom how I would get significantly more power by doing the grey wire mod. I already am easily competative with these other bikes...they have also driven mine and agree.
If no one knows..then perhaps all I can really do is try it and see.
However, I am a little reluctant to just try it because I have many times proved to myself that the old adage of "if it ain't broke...don't fix it" has got a lot of validity.