LOL at you guys....
I've had great success with my color tune , especially on multiple carbs setup.
Even the lowly W-1 can be set very nicely with the color tune.
You know, for diagnosing idle mixture , no driving down the road is necessary...........
Rusty , the colortune should have a very large color chart included in the box , to enable diagnosis of what you are able to see thru the plug.
Of course there are other ways to tune your rig , it's just that this tool works too.
