A little can go a long way. The dyno tech said that 14.2 is what he'd set up on a Power Commander with everything stock. Just enough fuel to cool it a bit and smooth it out. Too much might cut into my gas mileage. There is a certain amout of trial and error. This is my main touring ride. The most important parameter to me is range. That's why I got the '08. The EFI should return 50mpg with the 6 gallon tank. I'll find out tomorrow.
flhrrider