Hey bud....I know this doesn't answer your question about the kph voltage but I honestly think you are going about diagnosing this the completely wrong way :O
More then likely its not your fuel pump "pumping" too much gas, check your fuel filter? check your lines? heck clean up the bike well under the gas tank area (carbs, air box, etc...) and look for leaks.
More then likely its not your fuel pump "pumping" too much gas, check your fuel filter? check your lines? heck clean up the bike well under the gas tank area (carbs, air box, etc...) and look for leaks.