Checked my plugs and it looks like the bike is running a little lean. It's a 2003 fuel injected road king with 2 into 1 Thunderheader and a D&M spike air cleaner. The dealer says I have the 32848-02 download. Anybody know what that is exactly? Can't find anything by googling it.

 

I have been told by several tuners and engineers that you can not tell about fuel mixtures by just looking at the plugs. There are so many additives in gasoline for cleaning and moisture prevention that the plugs will not be a good indication of the F/A mixture. Just what I have been told but the information came from some very experianced people.