Re: ngk vs. champion plugs???
In my experience fooling around with 2 cycle engines for over 40 years I found autolite to foul the least and perform the best. Plugs are old technology and not rocket science, go by experience. The Japs make a good plug...but whose design did they copy? Also don't be afraid to experiment with heat range, each application is unique, the O.E.M. recommendations are, just that.