I have optimised my '03 for performance, with mpg tossed to the wind. The practical top speed (actual) is 85 at 7700 rpm. I get 55 mpg in my normal riding, 60 with a 50/50 mix of Interstate and rural/suburban.Sounds like that is what I need to do then. What mpg and what top speed are you getting with that?
You cannot, it is one or the other. I prefer having the speedometer accurate and the accumulated miles under-reported by 10%...And you said un corrected speedometer. How do I fix that and keep the miles I've riden accurate also?
There is no difference, they are just two products that do the same thing. As stated above by myself and Chatman128 neither will fix the speedometer and not affect the odometer. You get to choose correct speed or accumulated miles--not both...Now, what's the difference between that and speedo healer? Also, which one doesn't affect the miles traveld as bad?
The OP and I have pre-'07 400s, the speed sensor is on the front wheel. You would need a bigger tire up front to correct the +10% error, however there really isn't any tire size that would fit and satisfactorily fix the error.As cliffyk said, you get to make a choice. Correct speedometer reading or correct odometer reading. You are not going to get both. The same sensor (on the rear wheel) is used for both. The only way to fix both simultaneously would be to change the firmware for the instrument controller.