what do the plugs look like? i put home made striat pipes on my speedy .i also drilled out the airbox .snorkle gone ai gone.i went with 42/130 and got nice dark color on the plugs.it's cold here too.45s seem a little rich.with a k&n you should be good with 42s/135 .depending on were you live.no mater what the plugs will tell you all you need to know
