15.0 mpg to 21.6 mpg!

318willrun said
A 30 or 40 mile run really is nothing. You need to put at least 250 miles on it before filling.

You guys are misunderstanding the point. I'm not using 21.6 mpg, and not using my "mpg test route" as a measurement of "real world" mpg. I've already stated as such (see post #6). I don't expect to go ride around town and get 21.6 mpg. I never said such a thing.

My "mpg test route" ... IS A METRIC! In order to make an apples-to-apples comparison of my set-up before and after changes. 250 miles of varying traffic conditions from one day to the next, combined with varying weather conditions (from one "test" to another) would measure real world conditions sure enough. It would not provide me with a quick/easy/accurate/relevant measurement from one jetting change to the next. 250 miles would take hours / days to complete. I want more quick and direct data bringing to light what my jetting change is doing (outside of what I observe on the AFR gauge). My "mpg test route" takes about an hour to get a reasonable metric.

And 21.6 mpg let's me know that the 1405 is doing a much better job at atomizing fuel (cruising along) than the 1407 was. Most of the time it is running about 14.7 AFR on my current set-up. I'm going to get my POWER mode AFR richer, but I think I can hit 22 mpg once I get my CRUISE AFR to ~15.5.

7milesout