Never have figure out,......
Here's my stocker, at sea level (drilled exhaust) supposedly running on the lean side (145 main) from the factory, and leaner yet w/ relieved exhaust,.....and averaging 45 mpg,.....mite get 50 riding like grandma on her way to church !
Then we have these modifides,....running on the rich side. (150-155 main) averaging 57-60 mpg,.....
Now,........I never was the best at math,......so I'll let the techs tell me, which bike is running leaner ??