not wanting to rain on your parade, but isn't the .64v is dependant on your input voltage. each bike will have a SLIGHTLY different voltage depending on battery life etc. I done this on my crf which is basically the same process, I used a 5v voltage source from work and set it at the spec, I did note that even slight changes in input volts changed the output voltage. could't see why this wouldn't be the same on a KTM TPS. I ended up buying a adjustable voltage step down gizmo from ebay for doing the same process at home if I ever wanted to do it again.